Look at the tart water recipe. Some tart water recipes contain only eggs, water, flour and sugar. This type costs about 6-8 cents. This type sells for $1 each, and if the quantity is large it is possible to keep the money and make a small profit.

Some recipes are light cream, plain milk, sugar, and egg yolks. The cost of this type is about 1.2-1.8 dollars or so. Currently on the market this type sells for 2.5-4.5, this level of profitability is much better than the previous type.