Candy thermometers are an important accessory when making any type of candy or chocolate, to know the exact temperature to keep it from burning! From maple candy to peanut brittle, a candy thermometer makes it much easier to know when the job is done! Also known as a sugar thermometer, it allows you to know the stage of your sugar. Use as an accurate thermometer to measure oil for deep-frying. A candy thermometer is different than a meat thermometer, as it is able to read higher temperatures.