Precision Fermenter in Farmstead World — building in the game, and what it is on a real farm.
A precision fermenter is a stainless tank of yeast or fungi that have been given the gene for one specific protein, usually a milk or egg protein, and are fed sugar and nutrients until they make it.
The protein that comes out is chemically the same as the one from the animal, which is why it can go into cheese, ice cream or a bakery mix without the animal ever being involved.
The technology is not new: rennet for cheese, insulin and most of the world's vitamin B12 are already made this way, at a fraction of the land and water a herd would need.
Farm facts about precision fermenter
The little tower on a barn's roof peak is a cupola — it vents hot, moist air out of the hayloft, and often wears a weathervane on top. (general reference)
A good chicken coop has perches for roosting and nest boxes for laying, and its most important job is keeping the flock safe and secure from predators. (en.wikipedia.org)
Chicken keepers have argued for generations: the 'fresh air school' says coops should be open and breezy even in northern winters, while others seal their coops snug against the cold. (en.wikipedia.org)
Hens naturally lay mostly in the warmer months, but lighting that mimics summer day length inside the coop keeps them laying eggs year-round. (en.wikipedia.org)
Traditional British stables kept hay in a loft reached by a pitching door, above cobbled floors with drainage channels to keep the stalls dry. (en.wikipedia.org)
Pig housing has its own vocabulary: a small pig house with an outdoor run is a 'sty', and a low, half-round field shelter for pigs is called an 'ark'. (en.wikipedia.org)