Most bakeries in major grocery stores sell them pre-made and un frosted.
Yes.
Yes, but I have never tried it.
It is a type of chocolate cake. Red velvet cake is not the same as adding red food coloring to chocolate cake. But if you want the same color as one, but don't mind it not tasting like a Red Velvet cake, you can add two ounces of red food coloring to a standard chocolate cake mix or recipe. Also, red velvet cake is usually frosted with a cream cheese frosting or a cooked, whipped frosting.
It depends on if you mean buying a cake or buying cake mix. It depends which store you buy it from as well. Even the icing designs depend on that. It can range anywhere from $2 - $15. There are some incredibly fancy ones that can cost hundreds! I can't answer that for you, but I can tell you red velvet cakes tend to cost more.
Red Velvet Cake normally requires 2 large eggs, so unless you use a commercial egg substitute, your cake will be slightly different from traditional Red Velvet Cake. If for some reason you cannot use an egg substitute product, you can replace each egg with a tablespoon of oil and two tablespoons of water.
Because Red Velvet cake is basically vanilla cake with red food coloring you could add any flavor you want. If the flavor you are adding does not go with vanilla you could just swap it out. Hope this helps :o)
According to Food Detectives on the Food Network channel the answer is YES!
You don't really.
Many grocery stores, bakeries, and shops sell them.
There is cake flour that you can buy from the store if you want to make it from scratch.I can found it in my local walmart.But thee are no chemicals in cake.
In a supermarket in the baking section.
You shouldn't just add flour to the cake mix to stretch it to a third layer, that would upset the delicate balance of flour, protein, acid, leavening agents, and the like. The result wouldn't be good, either from a texture or a taste standpoint. If you want a third layer on your cake, buy an extra box of cake mix and use half of it for the third layer, or buy a bulk cake mix bag from Costco or Smart n' Final, and make the three layers according to the recipe on the bag.