» Sun May 13, 2012 11:32 pm
Flour is the difference.
Cake flour is more often than not, a mixture of white flour and cornstarch. Muffins are more like quick breads, dense and quickly blended. Over blending muffin ingredients results in tunnels in the muffin, and a tough crumb. The same is true for cakes, but, most cake recipies call for a longer mixing time, while muffins are melded together after a few turns of the mixing spoon. Cakes can also be either dense or light in texture. Both cakes and muffins can be savory or sweet, or a mixture of both. Icing is irrelevant, I have eaten cakes without frosting, and muffins with icing.
Icing can be made of meringue ingredients, icing sugar and liquid, or boiled and whipped sugars and fats. There are also canned and squeeze icings and decorating gels.
Cake and muffin mixes are available here in the states, but many people, such as myself, prefer to bake from scratch as well.
There are also a variety of flours, including cake flour, whole grain, bleached, bleached with selected whole grains, and unbleached, refined flours. Cake flours are usually made of soft winter wheat, with added cornstarch for lightness and gluten reduction. Muffins can be made witha combination of soft and hard flours, and bread flour is normally made from a hard, summer wheat that has more gluten.
Leavening in cakes can be from baking powder, baking soda and salt, or eggs,
Leavening in muffins is usually baking powder plus a teaspoon or two of vinegar in the milk, or buttermilk, as mixing muffins is more of folding in technique. The buttermilk or vinegar acts as a leavening boost, to produce a lighter, tender crumb.