Wife Pastry (Lo Po Bang)

INGREDIENTS

• 2 cups cake flour
• 2/3 cup confectioners' sugar
• 1/4 cup butter
• 1/2 cup water
•  
• 2 tablespoons confectioners' sugar
• 1/2 cup vegetable shortening
• 1 cup candied waxgourd
• 1 1/2 cups sweet rice flour (mochiko)
• 3/4 cup superfine sugar
• 1/4 cup sesame seeds, toasted
• 1/4 cup vegetable shortening
• 2/3 cup water
• 1 egg yolk, beaten