IN THE KNOW: TUBE PANS
A TUBE PAN is any cake pan with deep sides and a hollow center tube. It’s used mainly for baking angel food and other sponge cakes. The tube allows hot air to pass through like a chimney. This helps cakes bake faster, and results in more evenly baked cakes. The tube also gives the batter something to grip onto as it rises.
Tube pans are available in a variety of shapes, sizes, and materials. Bundt pans are a type of tube pan with curved, fluted sides that results in an attractive finished product.
Angel food pans have a flat bottom and straight sides. Some pans have little feet poking up from the top (so cakes can be cooled upside down), and a removeable bottom, making it easier to remove cakes. While you’ll find nonstick straight-sided tube pans, you don’t want to use them for angel food or chiffon cake — they won’t allow the batter to “climb” the sides of the pan.