# Soften the margarine at room temperature and put it into a big and deep bowl. Add castor
sugar,
milk and yolk on it. Stir it or mix it by your fingertips, until it turns to smooth.
# After adding salt, vanilla and baking powder, add sifted
flour and
corn starch little by little, make it reach low-medium consistency.
# Pick pieces from the dough, which are a little bit smaller than
walnut, roll them as balls, dip them into whisked egg white at first, then cover them with granulated
sugar.
# Make a cave in the dough ball at first and then fill this cave with jam. Repeat rhses processes for all of the balls, then place them onto the greased baking tray.
# Place the cookies into the oven, which is preheated to 374 F. Bake them, until they turn to light pink.
# Serve them cold.
