1. Preserve nutritional value: The process of grinding grain with stone mill is slow, and the temperature will not rise, which can reduce the nutritional loss caused by heat. In contrast, the high-speed rotation of iron mill will produce heat, which will have a certain impact on the nutritional value of grain.

2. Adjust the grinding thickness: The stone mill can control the grinding thickness by adjusting the grinding pressure and grinding speed to meet different grinding requirements. This makes the stone mill more flexible and can meet personal preferences and different recipe needs.

3. Preserve natural flavor: The grinding surface of the stone mill is smooth, which will not scratch and wear the grain, and can preserve the natural flavor and flavor of the grain. In contrast, the surface of iron mill will produce some scratches on the particles, which will affect the taste of the particles.

4. Traditional craft and cultural significance: Stone grinding has a long history and cultural tradition in some places and is considered as a traditional grinding method. For those who pay attention to traditional crafts and culture, the stone mill has a unique charm.