All-Grain vs Extract Brewing

The difference

Where the wort comes from

Extract brewing starts with malt extract: barley that a maltster has already mashed, concentrated and dried or syruped. You dissolve it in water, boil with hops, and ferment. All-grain brewing starts with the crushed malt itself -- you hold it in hot water for an hour so its own enzymes convert starch to sugar, drain the resulting wort, and boil that.

That is the whole technical distinction. Everything else follows from it: all-grain needs a vessel that holds a temperature for an hour and a way to separate wort from grain, and extract does not.

What all-grain genuinely buys

Three real gains

Cost. Base malt in bulk is considerably cheaper than the equivalent weight of malt extract, because you are not paying a maltster to mash and concentrate it for you. Over a year of monthly brewing the saving is real, and it widens if you mill your own grain.

Mash temperature control over body. This is the gain that most changes what you can brew. Mashing around 148 to 150°F favors beta-amylase and produces highly fermentable wort -- a drier, thinner beer. Mashing at 156 to 158°F favors alpha-amylase and leaves more unfermentable dextrins, giving a fuller body. Extract fixes that choice for you at whatever the maltster decided.

The grain bill itself. Want 8 percent Munich, a touch of acidulated malt for pH, and flaked oats for mouthfeel? That is an all-grain recipe. With extract you have a base syrup and whatever you can steep.

The counter-argument

Extract is better than its reputation

All-grain brewers can be sniffy about extract, and they are wrong about the important part. Malt extract is made by commercial maltsters with better equipment and tighter process control than any homebrewer has, and fresh extract makes clean, accurate beer. The historic complaints about extract -- dark, caramel-tinged, cidery -- trace to two things that have nothing to do with the method:

• Old extract. Liquid malt extract darkens and develops a stale note as it ages. Buy fresh from a shop with turnover.
• Partial boils. Boiling 2 gallons of very concentrated wort and topping up to 5 darkens the beer through Maillard reactions and lowers hop utilization. This is a kettle problem, not an extract problem, and a bigger pot fixes it.

Middle ground

Partial mash is a real option

You do not have to choose. A partial mash uses a base of extract plus a few pounds of actual grain mashed in a bag or a small vessel, which gets you most of the grain-bill control for a fraction of the equipment. It is the natural step for a brewer who wants to try mashing without buying a system, and many published recipes are written for it.

If you are switching

What to read next

The shopping list without the upsells is the all-grain brewing equipment list. If you have decided on a system, the market view is best all-grain systems and best electric brewing systems. The first accessory worth buying afterwards is a mill: best grain mills.