Mexican Coffee Bun

Bahan-bahan (10 porsi)

• 17 oz bread flour
• 3 oz castor sugar
• 1 teaspoon salt
• 1 oz baking milk powder (optional)
• 0.35 oz dry yeast
• 1⅓ cups water
• 1 large egg
• 2 oz unsalted butter
• 7 oz unsalted butter
• 5 oz powdered sugar (sieved)
• 3 large eggs (lightly beaten)
• 7 oz cake flour
• 1 tablespoon instant coffee ( + 2 tablespoons hot water or 3 tablespoons Espresso)
• 1 tablespoon coffee liquor ( or 1 tablespoon coffee essence, optional)
• 3.5 oz unsalted butter