Close your eyes for a moment and think about your favorite cake, pasta, and crusty bread. OK, you can open your eyes now, and please don't drool on your computer. What was the cake you pictured like? Was it light and fluffy? Did you imagine pasta with a silky, smooth texture? Was the bread you pictured wonderfully chewy? Did it give your jaws a workout? In this science fair project, you'll explore an amazing substance in these foods, called gluten, and discover why these foods, all made from wheat flour, have such different levels of tenderness and toughness.