Orange-Glazed Sponge Cake

Ingredients (12)

• 6 large eggs, room temperature, separated
• 1-1/4 cups sugar, divided
• 1/3 cup orange juice
• 2 tablespoons grated orange zest
• 1-3/4 cups all-purpose flour
• 1/2 teaspoon salt
• ORANGE GLAZE:
• 1 cup water
• 1/2 unpeeled orange, finely chopped
• 1/4 cup sugar
• 1/2 cup confectioners' sugar
• 1 tablespoon butter