
Although mostbeer is brewed usingcereal grains—most commonlymalted barley—as a source ofstarchsugars, it can also be made frombread.[1]
Beers made from bread includeSahti in Finland,Kvass in Russia and Ukraine, andBouza in Egypt[2] and Sudan.
In several countries, 'Toast Ale' is made—in a range of styles—from surplus bread from the catering trade, as part of a campaign to reducefood waste.[3][4] The recipe isopen source.[1] Inspired by this,[1]Adnams brewed a range of three beers exclusively forMarks & Spencer in 2018, using leftover bread from the store's sandwich suppliers. All the waste bread was then used asanimal feed.[1]