Ingredient

Beer

In cooking it does two jobs — the malt adds sweetness and body, the bitterness cuts fat. Hoppy beers concentrate their bitterness as they reduce and can turn a stew acrid, so a malty ale is usually the safer choice.

Sourcing
Match the beer to the dish rather than reaching for whatever is open: stout for beef, wheat beer for mussels, lager for batter.
Varieties
Stout, Brown ale, Lager, Wheat beer, IPA
Quality cues
For batter, cold and fizzy matters more than the beer itself — the carbonation is doing the lifting.
Substitutions
Beef stock, Cider, Sparkling water (for batter)
Storage
Cool and dark, upright. Once open it goes flat within a day, which only matters for batter.
Shelf life
Unopened months to years by style; open, use the same day
Nutrition

Per 100 g

Calories
41 kcal
Protein
0 g
Fat
0 g
Carbs
10.6 g
Fibre
0 g
Sugars
10.6 g
Sodium
13 mg

From USDA FoodData Central (#171871). Raw, edible portion.