Why Are My Coffee Beans Oily?
The oil on a dark bean was inside the seed all along. What pushes it out, and why a sheen tells you how long the coffee has been sitting rather than how it was roasted.
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Notes from the roastery: what we buy, how we roast it, and what we have learned building coffee programs on the Gulf Coast.
Tagged “storage” · see all of Learn

The oil on a dark bean was inside the seed all along. What pushes it out, and why a sheen tells you how long the coffee has been sitting rather than how it was roasted.

Green coffee barely smells of anything. Roasting builds the whole aroma from scratch, and it does it along four unrelated chemical routes. Which precursor becomes whic...

Sumatra Ribang Gayo runs banana, spiced rum and cedar over a heavy body. Pour over at 1:15 to 1:18, or a coarse French press at 1:12 for more weight.

ASCENT is the Inheritance house blend: burnt sugar, citrus and juicy sweetness. Espresso and filter ratios, plus why it holds its shape in milk.

Washed Burundi from Kigina hill runs blackberry, fig and dark chocolate. Grind, water temperature and ratio settings for V60, Chemex and French press.

Java Bukit Paniisan from Indonesia tastes of cocoa, peach and warm spice. Grind sizes by method, a 1:15 to 1:17 pour over ratio, and storage tips.

Ethiopia Gerba Dogo comes from smallholders in the Guji zone: floral, stone fruit, clean finish. Brew it on a V60 or Chemex in about three minutes.

Green coffee is the raw, unroasted seed. How moisture and bean density shape a roast, how to store it, and why the weight loss claims do not hold up.

Ethiopia Yabitu Koba is a natural process heirloom lot from a smallholder collective: cooked peach, apricot, dates. Brew at 1:15 to keep the fruit.

Five to 20 ounces in about four minutes, 11.5 inches tall, water tank on either side. Where the Ratio Four fits and what its warranty covers.

Nyeri Kamoini is a washed Kenyan from SL-28, SL-34 and Ruiru 11 smallholders. Peach and apricot, with 20 g to 300 ml as a starting pour over recipe.

Kenya Nyeri Ndaroini is a washed lot of SL-28, SL-34, Ruiru-11 and Batian: spiced sugar, red berry, ginger. Pour over at 1:16 with a 40 second bloom.

Everpure's EZ-RO 650 makes 650 gallons a day, stores 30, and blends minerals back in so you can set TDS for espresso and tea. NSF listed EV997577.