Speaking of Sludge, I have been getting a Water In Fuel (WIF) light on the dash. I immediately thought that I may have gotten a bad batch of BioDiesel. I was warned by several folks that I’d go through a couple of fuel filters when I started running BioDiesel, because it’s a very powerful solvent and will clean out my tank, fuel lines etc. The old Dino Sludge will be cleaned out, and clog up my filter prematurely until the system is sparkly clean. So I drained the fuel filter bowl yesterday into a clean mason jar, and then pulled the fuel filter. Fuel Filter didn’t look so dirty, though there was some sludge in the fuel filter bowl. There was one pea sized chunk of white spludge looking stuff, that I suspect was shorting out the WIF wires. There was NO water in the fuel. This the second time in a week that I’ve drained the bowl, and neither time did I find water. Put in a new filter and have set aside the jar of biodiesel along with a jar of WVO to see if anything settles out over the next week or so. Then I’ll put them both in the fridge and then the freezer and see if they solidify or separate.

While I was at it, I removed the bowl from the fuel preheater to replace the filter/strainer. Oh, oh. There’s sludge, and this is not the good kind of sludge. This is black slimy stuff that is fungal in nature and is known for doing some serious damage to fuel systems. This very truck had it’s own fuel tank dropped a year or two ago, when the previous owner got a bad batch of Diesel. He paid a bunch of money to have the whole fuel system purged and cleaned. He then ran an additive in his fuel every fill up to kill off any remaining nasties. Well the dealer missed this filter.

I am pretty sure this bug didn’t get introduced with the BioDiesel, rather it was old funk that was missed. At any rate the BioDiesel in the tank got a double dose of anti-fungal treatment. This stuff is NASTY. I wonder if there is any other of this stuff in the fuel system.

This is a California model truck and has an EGR valve and Catalytic converter. The EGR was so sooted up I’m surprised the truck could breath at all. The EGR (exhaust gas recirculation) is mounted in the intake horn, and it recirculates exhaust back through the intake to insure all unburned fuel the first go round is now burned. Trouble is the intake horn goes from a 2 1/2 inch or so diameter down to about a 3/4″ diameter and where an intake is usually clean, these intakes get choked with soot from the exhaust. That is now in a parts box. Catalytic converter is probably clogged up too. That will soon be pulled for examination. I’m trying to figure out if I can clean it, or replace it. In consideration of the environment and in exchange for removing the EGR it is now burning B100 biodiesel. It smells amazing. And it is much, much cleaner burning and far, far less polluting. I think I’d pass any smog test running B100. The truck does not smoke even under heavy acceleration, going uphill and towing my home built boat, a Tolman Skiff.

Have also been trying to get a little more power in this beast. It came stock with a 180hp/400lbs torque. Nice torque that peaks just off idle, but anemic hp. But the truck hasn’t felt like it had that torque and rather didn’t like pulling the boat. So I’ve been doing all the normal stuff you do on a diesel when the power is down. New fuel filter didn’t fix it. I’ve found no air leaks in the turbo intake system, etc. Added a ‘torque plate” to increase hp and torque and only felt a slight difference. It should have increased power to about 250hp/650lbs torque (all with a $29 part I bought on ebay)…. but no. I keep scratching my head. Then I remember reading about various recalls on this truck. One item was the accelerator cable. I look at the engine end, and the cable is sagging. Hmmm. Look inside at the pedal end, and it looks ok. I lift up the bottom of the pedal and suddenly I have an extra 1 1/2 inches of cable. I look at the position of the go pedal vs the brake pedal and it’s a full inch and half or more lower than the brake pedal! Eureka. So I fabricated a gizmo to take up the slack of the cable and take the truck for a ride. Holy Cow Batman, suddenly I have gobs of power, no smoke (making fuel with a diesel can make a lot of soot). This beast is now truly a beast! The transformation is just short of astronomical.

And now, I have 55 gallons of 1 micron filtered Waste Veggie Oil out back. Do I attempt to burn it as is, or blend it with #2 diesel? Or do I go the safe route, and build me an Appleseed Biodiesel processor? To be determined…

Vallejo is in the North East San Francisco Bay and is called by some, the gateway to Napa, Sonoma and the Sacramento Vallejo. For me it was the final frontier in affordable housing in the SFBay area. It was affordable because of the big crash that came after the Navy left Mare Island Shipyard. You got a lot more for a lot less than more desirable areas such as Berkeley, Marin etc. Who would have thought we’d get a top notch coffee roaster in Vallejo to boot.

Fabrice and I talked politics and shop for a while as I sampled some new coffees he’d just roasted that day. There were two new Ethiopians, including a Harrar that had an amazing aroma. Fabrice’s right hand man Mario opened a bag for me and the fragrance of blueberries/cherries just about knocked me over. And it was a lighter roast like I prefer for espresso.

Had it the next morning for a couple of extraordinary shots. The first shot was a bit over extracted but it filled the kitchen with an intense bouquet. The flavor was super concentrated sweet blueberry / cherry with what I think was a hint of ripe fig, finishing with a lovely milk chocolate richness.

Amazing coffee, perfectly roasted.

Saturdays from 9-12 is open house at Moschettis’, where Fabrice brews up a bunch of coffees for folks to taste, and to offer up great deals on his fresh roasted beans. This day, he offered $8 a pound coffee. It really is a fantastic for really good coffee that is freshly roasted.
Fabrice and I visited in between all his other free coffee day visitors. The place was hopping, with folks coming, tasting and taking off with bags of coffee in their arms. Today there was live music with two guitarists jamming on some tasty tunes. There are seats at tables and umbrellas to make it a comfortable and friendly. And folks tended hang out, talk about Vallejo, local, national and international politics, home gardens, chickens, social issues etc. I am amazed that Fabrice is bringing together a diverse group of folks from the local community and fostering free speech and exchange of ideas. He is doing something very important for our community.

Fabrice suggested that perhaps I’d like to do a “Steve Roast”, and I giddily agreed! He asked what I’d like to roast. Since I had Sumatra and Uganda on my mind I said how about Sumatra, Uganda and a bean for mid tones. Fabrice suggested Brazil, which is a mellow and mild flavored bean. I agreed, and Fabrice’s right hand man Mario gathered up the coffee and loaded it into the roaster.

I said I’d like a lighter roast just for espresso, and Fabrice said, “it’s your roast”, you say when! I’m like a little kid in a candy shop.

The process is to dry the coffee a bit, and then increase the heat to the target temperature of about 475 degrees. The beans are roasting and rotating in the drum, and go through a color change from a pale green / ivory color to an interesting shade of orange. Soon we get to first crack where you can hear the beans cracking and snapping, and Fabrice says we should turn the fire down and coast through the second crack using the residual heat in the drum. Second crack the color is almost correct. We keep pulling samples and comparing them in both warm tungsten light and then natural sun light. Finally I proclaim the roast almost there and Fabrice pulls the lever of the roaster door and the beautiful coffee cascades out into the cooling bin, where it spins around and is stirred while it cools.

Freshly roasted coffee has a pleasant but subtle aroma of popcorn, and as the age of the coffee increases the aromas mature and become the familiar bouquet of high quality fresh coffee. The aroma changes depending on the bean(s), amount of roast and age. I have learned that there is a prime age of coffee that seems to range from a few days old to two weeks tops. My favorite time is about day four of a roast where the beans mellow and flavor is at it’s peak. Before this the beans are a bit green in flavor, a bit acidic or even citrus like and difficult to control in pulling shots. The first couple days, the crema is immense.

I thanked Fabrice for taking the time to roast with me, and I headed home to pull a first shot.

Day 1. The first 24 hours the coffee is green and very difficult to control. The grinder is dialed in after a few shots, but I’m struggling with a sharp and super bright shot. Eventually, I am able to dial in the grinder more, the amount of coffee, and my tamp and I end up with shots that almost behave. I sample half a dozen shots to dial it in, and finally pull some shots for my lovely wife’s morning latte. They are over extracted which made for a somewhat ashy flavor. I redo the shots and this time the shots are not over extracted and my lovely wife is happy.

Day 2. The second day the espresso is mellowing. There is still the gentle aroma of popcorn and the flavor is less green but still rather boiled peanut. All ash flavor is dialed out, and there is still mountains of crema.

Day 3. Continued mellowing, and less green flavor. Other earthy notes are really starting to come through and the shots are much more delicious. Crema overflows with goodness!

Day 4. Today and tomorrow is perhaps the peak of this roast. Will be interesting to taste over the next week, if my bag of coffee lasts that long. Actually, I fear I’ll run out before the weekend! I started with five pounds on Saturday and I’m down to less than half of that.

I think the roast is right on. I’d hesitate roasting any darker. Keeping in mind that I really had this roast, and blend in mind for my equipment, Miss Silvia, and Monsieur Mazzer, as well as my own general taste preferences. I’m thinking that the next time Fabrice lets me blend and direct roasting I’ll reduce Brazil, and perhaps drop in a tiny bit of Ethiopian or another fruity coffee bean. I like a complex shot with a journey of flavors.

Flavor is big, earthy with dark chocolate. Holds up really well in milk drinks. I generally start out with a couple shots for the Home-Barista (me) and then make lattes with two double ristrettos each for my lovely wife and myself. Lately however my coffee consumption appears to have gone up and I’ve woken up several times this week with my heart pitterpattering. I suppose there is such a thing as too much caffeine.

Day 5 & Day 6. Most of the green-ness has dissipated, but lingering is a bit of a boiled peanut flavor I’m not crazy about. This morning I pulled shot after shot to try and drive out that peanut flavor. Increased and decreased temperature, increased and decreased grind, but the peanut still lingers. This blending and roasting business is hard. Will consult with Fabrice about the roast. I suspect he’ll say we are a tiny bit under roasted on one or more of the three beans. Since we roasted all three together then all three beans would require an increase in roast. That seems reasonable to me. I wonder if roasters bother to separate their beans in roasting and then combine.

Interestingly, the peanut flavor does not exist in milk drinks. This emphasizes the fact that milk tends to mask flawed shots.

Hope to roast another batch soon. I’m down to less than a pound of coffee from last week.

Had to reduce the grind a full notch on Monsieur Mazzer Mini since the crema was honey dense and once I had done this the shots were picture perfect with only one of six having any hint of channeling. No bitterness, only the rich creamy choco goodness. I had two double ristrettos straight up and has as happy as a pig in mud. Then I pulled four more double ristrettos for a latte for my wife and a latte for myself.

Giant Steps is now my favorite blend. Well, my favorite until the next one. Will have to go visit Fabrice Moschetti and beg him to roast me up a big batch of his organic goodness. I much prefer to get my beans from Moschetti since Fabrice is the nicest fellow this side of the Bay, and his coffee is extra fantastic, and because I’m of the mindset of supporting my local Micro Roaster of Organic Coffee.

Have been on the lookout for an espresso grinder with more substantial, quieter, and larger burrs. Last week while using http://www.allofcraigs.com/ I came across a used Mazzer Mini way up in Minnesota. It was claimed to have been owned by a church as their decaf grinder in their own little cafe. It was sold as being virtually new. Well, I’ve seen enough “virtually new” things in my life to know not to hold my breath.

A week later the Mazzer Mini arrived and I unpacked it from it’s used fan box. Wrapped in bubble wrap and surrounded in foam peanuts, it survived the trip unharmed, other than a small scratch on one side. My UPS guy made a point of dropping it from about two feet up onto the concrete steps in my house, and then he high tailed it away before I could open the package and check for damage. The box was not in good shape at all.

But I lucked out and the grinder was in fantastic shape! I noticed that while unpacking, it had a major heft to it. The MIni was remarkably clean, though I took a few minutes to wipe everything down. I had a partial and older bag of coffee that I considered beyond it’s useful life to use for dialing in the grinder. I tried the setting the previous owner had, and it was a bit coarse. I ran a shot anyway to test it and of course I had about a five second pull. Way too coarse.

Changed the grind a full two numbers and that was way too far. I fiddled for a while and it turns out this grinder is very sensitive to even slight changes in the grind setting. The LeLit by contrast has a worm gear adjustment that requires a number of turns to make a difference. The Mazzer Mini would be easy to return to a setting since there is a number scale as reference. The LeLit has no scale, and you just turn the knob until you find a setting that works. The LeLit is more adjustable, but if you wanted to grind a coarse drip coffee ground it would be very time consuming to get back to your old grind. The Mazzer will be easy.

After dialing in the Mazzer Mini on old coffee I realized I had nothing to actually drink. So off I went to the NorCal Moschetti Coffee Roaster and picked up a couple bags of coffee to taste. Think I’ll get a bag of Blue Bottle on my way home tonight so I have plenty of coffee to sample in the new grinder.

Need a Mazzer Mini Owner’s Manual?

Have run about two pounds of coffee through the Mazzer Mini, and I have a few observations.

1. The Mazzer Mini is Quiet. The difference in sound volume between the LeLit and the Mazzer is night and day. The LeLit will wake up the neighbors, but the Mazzer is whisper quiet in comparison. The doser is louder than the grinding with it’s thwack, thwack, thwack.

2. The Mazzer takes a bit of getting used to. The LeLit did not have a doser, rather you hold your portafilter up to the switch on the front of the grinder and release it when you have enough ground coffee. The Mazzer has a timer that you advance to start grinding. It deposits ground coffee in the doser hopper, and then you pull the lever (thwack, thwack) to deposit coffee in your portafilter. Both grinders are messy, but the Mazzer has the potential of wasting a lot more coffee due to the hopper requiring a certain amount of coffee to be present for semi-precising measuring.

3. The LeLit has suffered from clogging of the grinding chute. The Mazzer has not yet suffered from that though I’ve read of folks having this problem.

4. The LeLit very often suffers from clumpy coffee, and the Mazzer does also. Maybe it’s a static electricity thing. All I know is that it’s a annoying. Clumps in your espresso grind do not allow perfect pulls. You end up with channeling and imperfect shots. Since the Mazzer sells for almost three times as much as the LeLit you’d think that it would perform light years ahead of the LeLit. But in my mind, so far, the Mazzer does not live up to it’s reputation. I see a zillion reviews that give it very high marks. And yet this grinder is giving me clumpy espresso. Why?

As I read some of the grinder reviews on some heavily visited coffee centric websites I am starting to wonder about the honesty of these reviews. High-end Espresso Grinder Reviews, Mazzer Mini Grinder Detailed Review. All this praise for a “high end grinder”, and yet I find it to be an imperfect machine.
More to come….

I have a timer I use that has 3 pronged male and female plugs. I set it so Miss Silvia comes on a good 45 minutes before I expect to use her.
Miss Silvia is much happier when her temperature and temperament is hot and stabilized.

The portafilter is clean and inserted into the group head over night, though it is not fully tightened down. Rather it is fairly loose. The portafilter should be up to temperature so that the shots don’t cool down as you are pulling them.

On top of Miss Silvia awaits the demitasse cups and a 2 ounce shotglass. They should be warm. Sometimes I pour hot water in them right before I pull a shot so that they don’t cool the shot down also.

The milk steaming pitcher goes in the freezer overnight. This way when I start to steam the milk in the morning, I have more time to create that magic microfoam before the milk has come to 145-150 degrees Fahrenheit. Other wise you might be up to temperature and zippo foam.

For my first grind of the morning I like to dump the very first bit of ground coffee to ensure I’m getting only fresh coffee in my espresso and not a 24 hour old grind. There is a huge difference in flavor. Stale coffee is not worth our time.

Up first was the coffee. Fabrice must have had ten or more variety of coffees to taste. I started with his 100% Kona which was it’s characteristic smooth chocolately flavor, and I followed with a taste of Yirgacheffe. This is the blue berry bomb. For some reason I tasted the fruitiness but not the blueberry. Could be my taste buds were tired. Anywho, went on to taste a few other coffees.

Then Fabrice showed me his new Bunn Trifecta, a high-tech single-cup coffee machine. It’s essentially a programmable French Press with three modes: preinfusion, turbulence and press-out. Very, interesting machine.

It was fun to watch and the Yirgacheffe I tried was delicious. It had that typical French Press, cloudiness, and richness. I then had a cup of Kenyan, that absolutely blew me away with the rich complex flavor. I fell in love with the Kenyan.

Then Fabrice said I should then re-try the Yirgacheffe, I did and once again I was blown away. The Blue Berry Bomb returned in all it’s glory, only this time it was a simple cup of coffee rather than an espresso. It’s as though the Kenyan reset my taste buds.

Wow. Now I wish I’d bought a couple bags of Kenyan Coffee, and a couple bags of Yirgacheffe to get me through the week with the most incredible coffee flavors ever.

What a marvelous visit. Do yourself a favor, if you love coffee, then go by Moschetti’s for the Freshest and Tastiest Coffee in Northern California. Moschetti has free coffee tastings most Saturdays from 9-1pm. You can also buy Fresh Slow Roasted Gourmet Coffee Online. I’m a huge fan.

Drink, be cool, and feel good.

Now your coffee and espresso will taste fresher and not have that taint.

Oh the horror of taint.