PURPOSE: To obtain an easily cookable delicious heat-cooked food utilizable for various foods by adding a dairy product such as cheese to frozen potato cubes, kneading the mixture at a temperature near the freezing point to season the potato and forming the kneaded material with a forming machine, etc.

CONSTITUTION: Potato is cooked, cut in the form of cubes and frozen. A dairy product such as cheese or butter is added to the frozen potato cubes and kneaded at a temperature near the freezing is treated with a forming machine to obtain a formed food point to season the potato. The kneaded and seasoned material containing potato at the size of dice and integrally bonded with the dairy product.