Primary
These little guys (some look here rather dried out and imploded – they aren’t quite in their element in the high vacuum of the SEM) are only about a micron or two in size but they’re real workhorses. When they’re done feasting on the sugars and cranking out carbon dioxide and alcohol, things look like this:
This is starting to look pleasantly familiar!
Next: secondary fermentation, but first it’s time for some secret ingredients…
