1 and yam 15 minutes can be cooked, but the specific situation still depends on the size and condition of yam.

2. If it is steamed yam, sliced yam will ripen more easily, which takes about 8 minutes. Crude yam can be steamed for a while, which takes about 15 minutes, and it is better to steam yam for about 20 minutes.

If you use a pressure cooker, the speed will be faster. 5 minutes for bed sheets, 0/0 minutes for thick blocks and 0/5 minutes for yam segments.