How to sous vide steak using a beer cooler box

By Sam Wong

TO CREATE perfectly cooked food, you need precise control over its temperature. It is this thinking that led to the invention of the sous vide method, in which food is cooked in a water bath held at a steady temperature. If you like splashing out on gadgets, you can buy the equipment to do this at home, but DIY methods also exist.

Why bother? Suppose you are cooking a thick steak and you want it to be medium rare. How well cooked a steak is largely depends on the maximum temperature the meat reaches, rather than how long it …