A machine prepares semi frozen food products and/or beverages from pre-prepared (e.g. frozen) cups. A user chooses the desired frozen cup, inserts it into the machine, chooses how they would like it prepared from a range of thickness options, and the machine then opens a sealed chamber door and inserts the product upward into the chamber and prepares the product by blending it in the cup. Upon removal of the product and resealing of the chamber door, the cleaning mechanisms provide thorough cleaning of all food contact surfaces and the chamber interior. Automatic high temperature steam sanitation takes place in the chamber if the machine is not used for an extended period of time, thus greatly reducing or eliminating the need for manual cleansing and sanitation by an attendant and ensuring healthy food preparation at all times.