apanese sake bottles are usually divided into two types: Tokkuri and Katakuchi.
Tokkuri:
Appearance: It has a narrow neck and a smooth, rounded body, and is usually made of ceramic, high-borosilicate glass, or wood.
Function: It helps maintain the temperature of the sake (suitable for warm or chilled sake) and provides good control when pouring.
Katakuchi:
A wide-mouthed sake bottle with no neck design, suitable for chilled sake and able to maximize the aroma.
Masu:
A wooden or bamboo sake cup with a square shape that keeps its natural texture. It is commonly used in izakayas and restaurants, and it gives the sake a light, natural woody fragrance.