Waffle
1.
Melt the butter in heat insulation, cool slightly, add yogurt and egg yolk and beat well, pour in the sifted low powder and mix well
2.
Egg whites and lemon juice, beat until thick foam, add fine sugar and beat until hard foam
3.
Mix the egg yolk protein liquid and pour it into the mold. Preheat the oven, the upper tube is 150 degrees, the lower tube is 170 degrees, the middle layer, bake for 15 minutes, after the oven is inverted and released