Storage of Roasted Coffee Beans to Maximize Flavor

The thing that makes espresso unique amongst all coffee brewing methods is its use of CO2 in the extraction process. Under the conditions of temperature and pressure encountered in pulling a shot, the CO2 from the coffee dissolves in the water forming carbonic acid which lowers the pH (acidity) of the water. This in turn affects the relative solubility of the hundreds of components that reside in the coffee grounds and it changes the profile of the compounds that are extracted. As the extract starts to pour from the basket and it returns to ambient pressure, the dissolved CO2 boils off and creates that honey-like crema which lets us know that we are in the sweet spot. Not too different from popping the cork on a fine bottle of champagne!

Bob Barraza wrote much more on the subject… very enlightening on the subject of getting the biggest bang out of your beans… and pocketbook.

Coffee beans on brown background.

Share

Blend beans for the perfect Espresso

From my youngest days, I remember going to a roasting spot with my folks. We would have to make a special trip to a little building just on the other side of town. It was on a main road, yet you could easily miss the whole building. It was small brown wood sided building. Up the few steps and through the front door, you were greeted with an aroma that was smooth yet bold. The first thing you saw inside was a counter that went from the front of the store to the back. Under the counter was many small square glass faced cube containers of beans. Every bean was brown, but not all the same shade of brown.

What made this the place for the insiders to visit was that you weren’t buying coffee of a particular type, grower, or from a place in the world. They mixed beans from multiple locations to come up with unique flavors. Every time my parents went in, the Roaster would come out with a new brew he had come up with.

These experiences gave me a different view on what made a great espresso. The actual cost of buying small quantities of beans and mixing is relatively small so it’s a bit of fun anyone can enjoy. Till I get time to post up my logs, visit this article on Coffee Blending to get started – we’ll catch up later on your successes mixes.

19844205

Share