Date--Spice Chiffon Cake | America's Test Kitchen

Ingredients

• 1 1/2 cups packed dark brown sugar
• 1 1/3 cups cake flour
• 2 teaspoons baking powder
• 1/2 teaspoon table salt
• 3/4 cup chopped dates
• 2 teaspoons ground cinnamon
• 1/2 teaspoon ground nutmeg
• 1/4 teaspoon ground cloves
• 7 large eggs , 2 left whole, 5 separated
• 3/4 cup water
• 1/2 cup vegetable oil
• 1 tablespoon vanilla extract
• 1/2 teaspoon cream of tartar