Top quality barley malt and cereal grains are crushed and then mixed with pre-conditioned water to form mash.

顶级麦芽及最优质的谷物磨碎后，混入经过处理的水，加热变成麦芽浆。

youdao

Dr Dahl says they had a diet of barley, which might have been crushed into a form of porridge, and they drank weak beer.

BBC: Breakthrough in world's oldest undeciphered writing