A glass of beer without a noticeable head of foam just looks wrong to craft beer fans. But have you ever wondered why those frothy bubbles are such an important component of the brews you love?

Some yeast fermentation terminology will be given here so that you will understand what you are reading in the homebrewing texts, what’s going on in your carboy or bucket, and so you can communicate these terms concisely.

Yeast Requirements During FermentationYeast needs certain things in order to do their job. They need sugars, amino acids, fatty chemicals called lipids, and minute amounts of minerals such as zinc and copper. Fortunately, these are already in most beer worts and it isn’t necessary to add extra nutri