Question: how much beer from 1 kg malt?
Answer: Because 1 l of pure water weighs 1 kg, 1 l of this wort weighs 1.032 kg. A typical malt may have a yield of 300 l°/kg. In this case, 1 kg of this malt yields 10 l of wort at a specific gravity of 1.030 or 5 l of wort at 1.060. This relationship can also be used to quickly measure brewery efficiency.