1, size of yam: In daily cooking, some people like to cut yam into large pieces for cooking. Due to its large size, it usually takes 10- 15 minutes to steam yam for cooked food. For people who cut the yam into smaller pieces, put it in a pot and steam it for 8- 12 minutes, so as to avoid the food being too soft and rotten due to too long steaming time, which will affect the taste of the food.
2, the use of utensils: if before cooking, the use of pressure cookers, electric cookers and other closed utensils, it can make the temperature of food rise faster, so that yam can be steamed as soon as possible, usually for 5-8 minutes. However, using casserole and iron pot, due to poor sealing and slow temperature rise, it takes 10- 12 minutes to cook yam thoroughly.
3. Firepower: If you can't fully grasp the heat when steaming yam, and use a big fire to cook it all the time, the time required is generally 8- 10 minutes. However, it takes 12- 18 minutes to steam the yam in the whole process.