STEP 1/7
Add sugar to butter and mix well. If you suddenly want cookies like me, but the butter is hard in the refrigerator, warm the water, slice the cold butter, melt it about two-thirds, and mix the melted butter with the melted butter, and you can make soft butter quickly without putting it at room temperature.
STEP 2/7
Add the yolk, please. If it's 45g, there are about three yolks in it. Add two or three drops of vanilla oil with salt.