Semolina Challah

Ingredients

• 1/4 cup lukewarm water
• 1/2 tablespoon sugar
• 1/4 oz. (1 packet) quick-rise yeast
• 2 cups bread flour
• 1 cup plus 2 teaspoons semolina flour
• 1/2 teaspoon salt
• 2 tablespoons vegetable oil
• 2 large eggs
• 3 to 3-1/2 tablespoons cold water
• 1 large egg yolk
• 1 tablespoon sesame seeds