Editor: Chinese Food Network Mobile site
Ingredients:Eggs2 pieces,SteamUntil cookedPurple yam45 grams,Yogurt42 grams, 33 grams of fine sugar,CornOil 15 grams, 38 grams of low-gluten flour
Purple yam is mashed and mixed with yogurt.AddEgg yolksand 13 grams of fine sugar, mix well.Add corn oil, mix well.Sift in low-gluten flour, mix into a uniform batter, set aside.
　　Egg whitesBe whipped to coarse foam, add the remaining sugar in three parts and whip.Form stiff peaks.Take one-third of the egg white to the batter and mix well.Return to the egg whites, mix well.
Pour into a six-inch springform pan.Level the surface.Put inoven,lower shelf, 135°C, bake for about 40 minutes.Remove from oven immediately and invert to cool, then flip over.Demold.
It is soft yet with some small purple yam granules...
