Is it possible my Thermomix® could have trouble heating food if it is overloaded with a lot of ingredients or frozen ingredients? Yes. Colder and larger quantities of food may require more time to heat. Related articles Thermomix® sells mixing bowls in many countries around the world. Does a non US mixing bowl work in the US version of the Thermomix®? How do I manage my Cookidoo® account? What recipe chips are available for purchase in the US?