Until the prions get you.

Read books.

That, but also certain things like yeast don’t scale in normal ratios. You gotta use logs and powers and whatever them fancy math boys do.

Food like burgers are also 85% technique and 10% equipment. I can’t cook one at home the same I could back I the day in an industrial broiler.

Most of those skills are somewhat transferable to other consumer electronics and even computer hardware to some extent. Hopefully they did alright.