Flow heaters are a kind of technology commonly used in the food industry. They provide the thermal energy used in various production operations, whether it's maintaining the temperature of a product, melting it, or drying. They can generate heat based on fuel, electricity, steam, hot water or another liquid heating medium. They allow you to maintain an input in a liquid state and prevent it from freezing or hardening, for example while making chocolate and chocolate sauces, jams, and pastes using vegetable oils or animal fats. They are used for dehydration (drying) of fruits, vegetables, nuts, berries, and mushrooms.