What is the purpose of fat in quick breads?

* Tenderness: Fat coats the gluten strands in flour, preventing them from becoming too tough when the bread is baked.

* Moistness: Fat helps to keep quick breads moist by preventing the water in the batter from evaporating.

* Flavor: Fat adds flavor to quick breads, especially when using flavorful fats such as butter, oil, or shortening.

* Leavening: Some fats, such as baking powder and baking soda, can also act as leavening agents, helping the bread to rise.