A first preliminary product comprising individual frozen pieces of a first food and a second preliminary product comprising individual frozen pieces of a second food are combined by precompacting the frozen individual pieces of the first preliminary product in a premolding process so as to form a concavity in the first preliminary product and placing the frozen individual pieces of the second preliminary product into the concavity of the first preliminary product to form a single frozen starting product that is put into at least one mold cavity. There the single frozen starting product is molded into a ready-to-prepare frozen end product by compacting the single frozen starting product.