Saturday, August 09, 2008

Thoughts on Roast Profiling

I've been working with some new roast profiles this past week. There are three camps on this issue:

The first is that the progression of roast via the roast curve makes a difference with respect to each bean. The second is that there is an optimum roast curve based on the chemical processes happening within the bean, and it is the knowledge of when to drop your beans that matters. The third camp would say that there is a generally acceptable "Point A" and a generally acceptable "Point B", and if you go from A to B quickly, and then it's a matter of leveling off and progressing the roast from there... it really didn't matter HOW you got from A to B, as long as you didn't stall the roast... in the cup, wouldn't matter. And you can be sure there are countless variations of all three.

The simple question is: Does profiling matter?

I would place myself somewhere amongst the first and second camps. I think that as a practical solution, there may be an optimum profile for various types of beans, and while there may be a perfect profile for every bean, I have neither the time nor the beans to waste to find out. I think that there is a profile for most SHB (strictly hard beans), and as Willem Boot proposed, a profile for the larger beans, such as the Margogype, and/or the more delicate beans such as the Gesha. Because of their size and density, I believe there is a profile that is best suited for peaberry, although I haven't found one I am 100% satisfied with. And it may be there needs to be a more
gentle progression the latter stages of the roast because any endothermic heat built up has a greater influence inside such a small bean. ... I'm still working on that.

I've spent a fair amount of time profiling in previous years, and my roaster has the ability to take profiling to an insane level, and from my hands-on experience, I will say that the degree to which profiling matters is directly correlated to the complexity, or quality, of the beans. If I get a generic Brazil Cerrado and tweak the profiles, there isn't much noticeable change in the cup. However, if I roast a Brazil Cachoeira Estate, a Brazil Daterra Santa Columba, or especially the Brazil Fazenda Esperanca, the more flavor nuances there are, the more critical the roast progression is into highlighting the "middle" complexities of these coffees.

Internally, there is a slight difference in the nature of the bean, because I can see it when I grind. For example, do you increase by 30 degrees a minute, 40 degrees a minute, or something greater? Is it a straight progression to first crack? Is it a graduated progression? Or does it progress faster as time goes on? I am finding that a gradual progression after reaching first crack seems to produces a little more
sweetness and distinctive flavors, while another curve may produce an amalgamation of those flavors, but they may not be as precise. Sort of the difference between what many find in espresso from a Robur vs. a Super Jolly.

Suffice to say, profiling is interesting, and I think that we are just scratching the surface. There are some theories that are complete b.s., and others that I've found out to be true, but what I am certain of is that the more the bean has to offer, the more profiling matters.

At least that's what I think.

Friday, July 25, 2008

New Coffees at the caffe

New Coffees at caffe d'bolla!

*Costa Rica El Puente "Caturra Miel"
* Panama Golden Peaberry
* Guatemala Finca San Jose
* Sumatra "Blue Batak" Tabarita Peaberry
* Ethiopia Koratie DP Organic
*Columbia Antioquia - Jardin Cerulean Warbler

Saturday, July 19, 2008

The "Incident" - An Observation

Some of you may be in the dark regarding the "Incident" at Murky Coffee in D.C.

There has been literally thousands of comments across the blogosphere regarding this tiff, and it brings some important issues to light:

This is not your father's coffeeshop.
Coffee has progressed incredibly over the past twenty-years, from the farmer cupping their lots, testing various drying methods, utilizing the science of cultivation--which can create a higher quality bean, to the artisan barista who spends countless hours understanding dosing, leveling, and extraction techniques... and who has to master the nuances of each espresso just as a concert pianist masters various pieces of classical music.

Several coffeeshops across North America have raised their standard of coffee and espresso quality to be greater than the food quality of most high end restaurants. It is the average shop, where over-roasted bitterness is the norm, that continues the thought that coffee is a method of caffeine injection, rather than a culinary experience. For these handful of shops that treat coffee as a culinary experience AND deliver it, a higher standard of respect should be given by their customers, as well as a higher level of decorum should be present in the barista.

This begs the question,

"Can we serve an exceptional product while maintaining a casual atmosphere and expect a high level of respect from the customer?"
There is a casual elegance you can find in many restaurants. Take a look at some of the seafood restaurants in San Fran as an example. Shorts, nice shirt, maybe even sandals... dinner for two, $400+
Is it a product of the atmosphere? Of the pricing? Is it a matter of revamping the entire atmosphere to elicit a different response, a different expectation from the customer?

These are questions I have been thinking about for a few years now and while I have a few solutions in mind... it is the implementation that is hardest. But I do believe you can raise the standard by raising the expectation through better presentation and consumer coffee education.

But the customer wants...

When you get a McFish from the Golden Arches it is entirely different from ordering the Seared Ahi Tuna loin at Charlie Trotter's; the same holds true for coffee.

Quality isn't for the Everyman, and rather than try to appeal to everyone, customers are given the best service by a continual raising of standards along with continued pursuit of excellence in our craft. All of this translates to an exceptional cup, and that is the greatest reward we can give.

Friday, July 11, 2008

Brazil Fazenda Esperanca: a few days later

I've enjoyed several more cups of this coffee in the past two days, and as time has progressed, the flavor nuances have become a little more defined, and the caramel-citrus finish is a bit longer.

I can't quite put my finger on some of the flavors I am getting in the middle of the cup. I'll have to give it a go again, but in a few words, it's good, really good.

Wednesday, July 09, 2008

More to come!

Our 3000 pound shipment from overseas has arrived!

Siphon brewers and accessories, and wonderful new teas will be available soon!

Wednesday, July 02, 2008

Espresso timing vs. flow

Observations of the day.

Most of us are familiar with the "Golden Rule" when making espresso -- 3/4 to 1 ounce of espresso in 25-30 seconds, or roughly double that volume for a double shot. When pulling a shot of espresso, how concerned should you be with the timing? How concerned should you be with the flow?

Obviously a combination of both must factor into play, but without going into the myriad permutations you can have of this or that, you come down to the main questions..

Too fast or too slow, which is worse?

There is always an ideal range you want to fall in, but between the two, you would rather have a thirty-five second or greater pour than a sub twenty second pour.

This is because espresso, in layman's terms, is about extracting the optimum amount of flavorful oils from the grounds. But how do we determine if this has happened?

I use timing as a 'rule of thumb' guide and then primarily watch flow and inspect the portafilter to see if it is clean. If the portafilter is clean, and the timing fell in the optimal range, we can assume that the oils were extracted perfectly, and made it into the demitasse. If there are dark oil stains on the inside of the portafilter, this is usually an indication of overextraction... or poor distribution, but that's a topic for another time.

If we underextract, as many places do, and get that eleven second pour, there are virtually no flavorful oils being extracted, and unflavorful piss-like espresso will usually be the result. I can opt for intense at times, but unflavorful, weak espresso is a far worse crime.




How important is the flow?


Flow is important because it gives one a good indication of the color and density of the crema. While the existence of crema is not the end all be all of espresso, it is most certainly one of the most important factors. Crema is important because of all of the body, texture, flavor, and aroma it gives to the espresso.

It's never a simple process, but evaluating espresso by taste is the ultimate way to judge, so whether there are dark oil stains in the portafilter or it was a thirty-eight second pour, we have to use our palate as the ultimate judge. Of course, in my opinion, a great tasting espresso with indicators that it is somehow flawed can only mean there is more improvement ahead.

While this is not intended to be anywhere near a deep exploration of the subject, I hope it will at least get your brain churning.

Tuesday, July 01, 2008

Rapid Brewing with the Finca El Injerto

Today I tested a fresh (roasted 10p last night) batch of Guatemala Finca El injerto on the siphon.

Grind 3 notches from 'espresso' on Mazzer Mini.
Brew time 20 seconds.
Rapid stir.

The taste? sweet nut, floral, light caramel and a bit of cocoa.

Wow.