A Thermapen might not seem like the most vital piece of kitchen equipment but it takes the guesswork out of your cooking – especially useful when cooking meat and fish. Trying to tell whether a thick piece of meat is rare, medium or well done is not easy, even for the most experienced cook. The Thermapen allows you to read the core temperature of your meat or fish so you can tell its doneness perfectly. It is also invaluable when making custard or other sauces that can curdle if they are too hot. You might not think you need a Thermapen but I can guarantee, once you’ve got it you will find yourself using it – a lot.