It should be possible. Yam is a good helper to lose weight, because it contains less calories, more nutrients and rich crude fiber, which is easy to increase people's satiety and control people's appetite. Moreover, the fat content of yam is very low, with only 0.2g fat per100g yam, thus achieving the purpose of slimming. If you need yam, you can go to Taobao and order "wen county Yam on the tip of your tongue". I hope I can help you.