Working on the Guatemela Palhu, calibrating our hygrometers, biking loops with the cargo bike

IMGP3008 by you.

A quick reflective cupping of Guatemala Huehuetenango finca Palhu, May crop arrival into Oakland/Emeryville through Royal Coffee. Palhu is a 33.8 hectare farm; elevation 1550-2000 meters; cultivars: 75% Catura, the rest Bourbon, Catuai, Mundo Nuevo.

We’ve gradually been finding our balance on this coffee. At the beginning of last week we were developing more of a chewy mouthfeel at a medium roast, slightly too much in the end, and we found ourselves liking the lighter roasts. Our Friday and Sunday roasts were comparatively light with flavors of Ceylon tea and lemon. Now we are slowly working back into developing the sugars without taking away the crispness in the acidity.

IMGP3017 by you.In other developments, we have re-calibrated our hygrometers using table salt and Ziploc bags. Pictured above is a worthless Taylor hygrometer.There is actually no way to calibrate this except by bending the needle, and even then it is garbage. Synthetic hair hygrometers are the way to go, the best from Duro-Therm. Hair expands and contracts with humidity, and is a pretty accurate way to measure relative humidity. The one we are currently using is an older Duro-Therm I got off eBay. We used to use a wet/dry bulb method that we combined with a vacuum cleaner to draw air across the wet bulb, kind of like a sling psychrometer. Our cellar has been a little moist, to be expected for a basement. We have a wine humidifier running all the time but it struggles sometimes with the amount of moisture. We are currently at 68% RH and 55 F. In a beautiful world I would have us at 55% RH and 60 F. I am sure we need an above ground silo to store our green coffee. Moisture and temperature are important for keeping our green coffee fresh for as long as possible, but at the very least our store room is highly stable. Our recent investigations are part of a long term study in green coffee storage. Today we are just excited about our high tech method for calibrating our gear.

Other news: the cargo bike had a long run yesterday from 40th & Hawthorne, 52nd & Steel, Milwaulkie & Tacoma, Fremont & Mississippi, 18th & West Burnside, Knapp & Milwaukie to 40th and Hawthorne.

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