Calpis butter

Calpis butter is a product of the Japanese company Calpis, which is primarily known for its eponymous fermented milk beverage (internationally known as Calpico). Calpis butter is made from the fermented milk used in their signature drink, and this gives it a unique and mildly tangy flavor.

The fermentation process helps break down the proteins and fats in the milk, and this results in a butter that is rich and creamy, with a slightly different flavor profile than traditional butter. It has a subtle sweetness and a hint of the fermented taste that is characteristic of Calpis' beverage products.

Calpis butter is typically used in Japan as a spread or for cooking, just like regular butter. It can add a special touch to pastries, sauces, or other dishes where butter is used. As a product from a well-known Japanese brand, it might be available outside of Japan in specialty stores or markets that carry Asian products.