Some sugars have a higher mineral content that may change the flavor — so experiment with extra grains in case a batch doesn't turn out. (kombuchakamp.com)
Add a few extra grains because you've been forgetting the salt lately. (lapechefraiche.com)
You may be able to grow enough extra grain or biomass to make ethanol for a tractor, but it will always be cheaper to grow the extra hay to feed a horse. (treehugger.com)