Food safety is a real problem now. If you can make it yourself, you can make it yourself. Eat it and rest assured.
Step1:Mash the cooked egg yolk with a spoo
Step2:Mix the butter and sugar and beat with the beater until the hair is fine. Add in the yolk. Beat well.
Step3:Add the whole wheat flour, starch, oatmeal and mix well.
Step4:Mix the powder to form small balls. Then press the thumb in the middle to form a ball
Step5:The oven is 150 degrees. You can leave it to cool in about 20 minutes
Cooking tips:It's better to use brown sugar. I just ran out of brown sugar when I made it, so I had to use white sugar. The total amount of sugar 30g is slightly sweet. It can be adjusted according to personal taste. There are skills in making delicious dishes.