Is AA Grade Coffee the Best? Kenya Coffee Bean Grading System: Selecting the Finest Quality

FrontStreet Coffee - Introduction to Kenya Coffee Bean Grading System

Kenya Coffee Bean Grading Standards

In the 2016 Coffee Review TOP30 list we covered previously, Kenya appeared 7 times, and the country has always been known for its gorgeous floral and fruit aromatics, pleasing sweetness, and just-right body — a origin that keeps delivering delightful surprises to the palate. The Kenyan lots entering the market this year are therefore especially worth watching. So how exactly are Kenyan coffee beans graded?

Kenya is a famous size-based grader, sorting green beans into 9 levels. By bean shape, there is PB (peaberry) — the round bean. A peaberry is a single whole seed inside one coffee cherry, whereas a regular cherry holds two half-round beans. These round beans often outperform ordinary beans in the cup. Because they make up only 10% of total production, they carry a relatively high price among Kenyan coffees — but they reward it with a harmonious, unified profile: rich, juicy acidity and sweetness wrapped in a syrupy texture.

By bean size, the grades continue: E (elephant beans), AA, AB, C, T, TT, MH, and ML. The most common grades you will see for sale are Kenya PB, AA, and AB. Batches between PB and AA with especially outstanding flavor and few defects may be stamped AA+, and those lots are well worth trying too. Grade C and below, however, are typically diverted to animal feed or fertilizer — they have virtually no drinking value and never reach the consumer market.

In terms of drinking experience, Kenya is my personal favorite among single origins. Whether natural or washed, Kenyan coffee excels, especially at light roasts: the dry aroma off the grinder is mouthwatering — deep, mellow, and incredibly full. I recommend shopping the PB and AA grades, with AA as the more popular, mainstream choice. Check the grade on the bag before your next purchase.

Knowledge Point

Most coffee-producing countries do not grade on a single criterion. Instead, they evaluate beans across multiple dimensions — defect rate, bean shape and size uniformity, and specific altitude requirements among them.

FrontStreet Coffee Recommendation

If Kenya's floral-and-fruit reputation is what draws you in, here are two aromatic lots from our shelf that deliver that same perfumed intensity:

FrontStreet Ethiopia Yirgacheffe Guodingding Cooperative. This classic washed Yirgacheffe is famous for its white-flower sweetness and bright citrus acidity — a floral note strikingly close to jasmine, with a green-tea finish. Brewed as a pour-over you get clear floral-fruit tones, lifted lemon acidity, and honeyed sweetness. It also makes an outstanding cold brew: long, cold steeping draws out more of the coffee's light, small aromatic molecules, producing an iced coffee as refreshing as fruit tea.

FrontStreet Boquete Geisha. From Panama's Boquete — home of legendary farms like Hacienda La Esmeralda and Elida Estate, and a terroir that speaks for itself — this Geisha shows the classic orange-blossom-and-honey signature: a white, coffee-flower fragrance on the pour, citrus, melon, and honey sweetness on the palate, and a whisper of caramel on the finish. It suits pour-over, drip bags, cold brew, the Clever dripper, and French press alike.

FrontStreet Strawberry Candy Geisha Blend. For a different take on layered flavor, this blend marries Costa Rican honey processing with Panamanian washed Geisha: raisin, orange, and ripe blueberry aromas, a rose-like enclosed fragrance, and a trace of almond on the finish — rich enough for pour-over, cold brew, home espresso, moka pot, or Clever brewer.