Dark Roast

What Dark Roast Does to Coffee

Dark roast reaches 455–475°F, well into second crack. Sugars carbonize — the sweetness tips from caramel toward charred and bitter. Acids break down almost entirely. Body is maximum. Bitterness is prominent. Origin character disappears; what you taste is primarily the roast itself.

This is not a criticism of dark roast. It's a description of what dark roast does and why drinkers who want it want it: they want weight, intensity, and an unchanging profile regardless of origin. The roast is the flavor.

Acidity, Body, Sweetness, Bitterness

Acidity: near zero. The acid compounds that cause reflux and brightness are destroyed at dark roast temperatures.

Body: full to very full. Maximum oil extraction, maximum textural weight.

Sweetness: low. Carbonized sugars read as bitterness, not sweetness. Dark roast that reads as sweet is actually medium-dark.

Bitterness: high. This is part of the value proposition for dark roast drinkers. The bitterness is the character.

Who Dark Roast Is For

Drinkers who want intensity above all else. Anyone who drinks coffee with milk and wants the roast to punch through. French press drinkers who want weight and body. Anyone who experiences acid reflux from medium roast — dark roast is the medical recommendation for acid-sensitive drinkers.

Not an early morning coffee if you want to actually taste it. An aggressive dark roast at 6am before the palate is awake is bitterness without nuance. Save it for midday.

Who Should Skip Dark Roast

Pour over drinkers — paper filtration strips the oils and you're left with bitterness without body. Anyone who wants to taste origin character. Anyone who finds coffee too bitter already — go lighter, not darker.

Frequently Asked Questions

Does dark roast have more caffeine than light roast?

No. Caffeine is relatively stable up to dark roast temperatures. By weight, light roast has slightly more caffeine — the bean is denser before oils evaporate and carbon forms. By volume, dark roast beans are lighter and more porous — you get more beans per scoop, so more caffeine per scoop. The difference is negligible for most purposes.

Why does some dark roast taste burnt vs. rich?

Roast speed and temperature control. Fast, high-temperature roasting at dark levels produces char and harsh bitterness. Slow, controlled dark roasting develops dark chocolate and molasses notes without the char. The difference is the roaster's craft, not dark roast itself. Peet's and Kicking Horse 454 are examples of well-developed dark roasts that don't taste burnt.