How to Choose Coffee Beans for Cold Brew

Cold brew extraction is slow, gentle, and forgiving, which changes the bean-buying math in ways most coffee advice ignores. The advice below is a framework for choosing, not a fake leaderboard — when we blind-test specific bags, the scores will land here with the full methodology behind them.

Roast level: the biggest decision

• Dark roast is the classic cold brew profile — chocolate, toasted nuts, brown sugar, big body. Dark roasts are physically more porous and more soluble, so they extract willingly in cold water. If you want "tastes like café cold brew," this is the lane.
• Medium roast is the balance play: enough sweetness and body, some origin character preserved. Our default for the house concentrate.
• Light roast works far better than the internet claims, with conditions: it needs a longer steep (20+ hours), a slightly finer grind, and a gentler ratio (1:8 rather than 1:4). Done that way, you keep berry and floral notes cold water usually mutes. Done lazily, it tastes like expensive water.

The full argument — with the chemistry — is in Light vs Dark Roast for Cold Brew.

Origin tendencies

Origins are tendencies, not guarantees, but the tendencies are real:

Origin	Typical cold brew character
Brazil	Nutty, chocolatey, low acid — the safest cold brew bean in existence
Colombia	Caramel and chocolate with a little brightness left in
Ethiopia	Berries and florals; needs the light-roast handling above to shine
Sumatra	Earthy, heavy, syrupy — polarizing hot, oddly great cold
Guatemala	Cocoa and mild fruit; a strong all-rounder

Freshness: relax, slightly

Buy by roast date, not "best by" — that part still applies. But here's cold brew's quiet advantage: it depends less on the volatile aromatics that fade fastest after roasting, because cold extraction was never going to capture most of them anyway. A bag three or four weeks past roast that's marginal for pour-over is still fully in the game for cold brew. Cold brew is where slightly-past-peak beans go to be useful.

Whole bean still beats pre-ground — ground coffee stales in days, not weeks — and grinding coarse yourself is half the quality battle (grind guide).

The budget sweet spot

Cold brew's forgiving extraction compresses the quality gap between a $10 bag and a $24 bag. It does not compress the gap between a $6 bag and a $10 bag — the bottom shelf's staleness and roasting defects survive any brewing method.

So: mid-priced beans ($10–16 per 12 oz) are the cold brew sweet spot. And pouring a $24 single-origin light roast into a 1:4 concentrate destined for oat milk is burning money on nuance the milk will bury — save those bags for flash brew, where they can actually speak.

What we're testing first

The first Snob bean blind test is planned: same water, same 1:5 ratio, same 16-hour steep, one variable at a time — a grocery dark roast, a mid-priced Brazil, a Colombian medium, and a specialty Ethiopian light, tasted blind and scored. The claims above go on trial there; results will be linked from this page when they land.