Best Anaerobic Process Coffees

What to know

• Start with shorter fermentation times (24-48 hours) before diving into extreme multi-day anaerobics.
• Colombian and Costa Rican anaerobics tend toward structured fruitiness; Ethiopians go wild and wine-like.
• These coffees fade faster than traditional processes—buy small amounts and drink within a month.
• Lighter roasts showcase the fermentation; darker roasts flatten the funk into generic sweetness.
• If a coffee tastes boozy or vinegary to you, that's the process—not a defect.

Bottom line

Anaerobic coffees aren't daily drivers for most people, but they're worth experiencing if you want to see how far modern processing can push flavor. Buy a bag, brew it for friends, and watch opinions split down the middle. For more approachable fruit-forward options, check out natural process guides.