Wash the green onions thoroughly, remove excess water, and slice thinly.

Cut the sliced cheese into small pieces and keep refrigerated until use.

Dry-fry the sliced green onions in a pan until softened. Do not use oil.

Spread the fried green onions on a plate to cool.

Sift the cake flour and baking powder into a bowl. Add sugar and salt, then mix well with a whisk.

Add cold, diced butter (1cm cubes) to the dry ingredients.

Use a scraper to chop and mix the butter into the flour until the butter pieces are pea-sized.

Create a well in the center of the flour mixture and pour in the cold egg and milk mixture.

Mix gently with a spatula until the flour is slightly visible.

Add the cooled green onions and chopped cheese, then lightly combine.

Place the dough on plastic wrap and flatten to a 2cm thickness. Wrap tightly and refrigerate for 30 minutes.

Cut the chilled dough into 6 equal portions.

Place the dough pieces on a baking tray and brush the tops with egg wash.