Malt extract

Malt extract is wort that has already been mashed, filtered, and concentrated at a factory, then sold to brewers as either a thick liquid syrup or a dried powder. Dissolving it in hot water recreates a base wort in minutes, without needing a mash tun, milled grain, or an hour-long mash rest, which is why it is the standard starting point for beginner brewers.

Liquid malt extract measures out by weight or volume and dissolves easily but can scorch on the bottom of a kettle if added directly over high heat, while dry malt extract is more shelf stable and slightly more fermentable per pound. Many recipes blend extract with specialty grains steeped briefly for color and flavor, giving some of the character of all-grain brewing without a full mash.

A frequent mistake is adding all the extract to a small volume of water and boiling that concentrated wort hard, which can darken the beer and shift its flavor compared to a full-volume boil; a partial boil with extract added later, or a full-volume boil where feasible, keeps color closer to style. Extract that has been stored too long or exposed to heat can also darken and lose freshness before it ever reaches the kettle.