Skill Builders

Skill Builder: Jeff Potter’s Yogurt Lab

Skill Builder: Jeff Potter’s Yogurt Lab

One of the great things about learning food science is the need to test everything. I say “need” because, in truth, it’s a lot of fun to geek out over the details and try various experiments that I wouldn’t normally try. Take yogurt. Everyone is familiar with it, but how is it made? Where does it come from? (Besides the store…) Making yogurt is incredibly easy, especially once you know some of the food science background. A bunch of different types of “friendly” bacteria chow down on the lactose sugars in milk, creating lactic acid in the process. This process, called fermentation, also changes the structure of the milk, turning it into a gel.

“Sous Vide” Cooking:  The Basics

“Sous Vide” Cooking: The Basics

โ€œSous-videโ€ is fashionable French for a method of cooking that involves longer cooking times at lower temperatures and reduced atmospheric pressures. It means, literally, โ€œunder vacuum.โ€ Commonly, food is sealed in plastic vacuum bags and cooked at temperatures well below the boiling point of water for dozens of hours, although the particular parameters vary widely with the food to be cooked. The point, really, is that the equipment involved is capable of finer automated control of those parameters than your conventional range, oven, and/or microwave, and the quality and flavor of the natural ingredients can be vastly improvedโ€”without sacrificing safetyโ€”by using it.