1. Homemade yogurt, put in a basin
2. Add egg yolk
3. Stir it up with your hands
4. Add corn oil and continue to mix well
5. Sift in low flour and cornstarch
6. Mix evenly into a paste
7. The egg whites are added with sugar in batches, to beat the dry foam
8. The meringue is divided into 3 times and the egg yolk paste is tossed up and down evenly
9. Pour into the mold and put blueberries on the surface (you can use an 8-inch mold, if it is a live mold, wrap it in tin foil)
10. Pour cold water into the baking tray, put it into the preheated oven, the whole process is 150 degrees, the lower level, 60 minutes (this temperature is for reference only!)
11. Baked
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