As an addition to what has already been said before, using normal brewer/baker's yeast will results in poor yields. On an industrial scale, this is done with specialized strains obtained through mutagenesis and selection. Like 20-fold increase in yield.
Anyway, I'll come up with a detailed guide on how to do that in the coming week or two, but some very simplified techniques are available online though.
Anyway, I'll come up with a detailed guide on how to do that in the coming week or two, but some very simplified techniques are available online though.