http://www.recipelink.com/mf/0/63107 While looking for more cake in a jar recipes, I came across this site that says it is NOT SAFE. It also says for people to not buy cakes/breads in a jar. Botulism is not killed by the methods in most of the recipes. Anyway, I just bought 3 cases of the jars, and now am afraid to use the recipes. Just thought I would warn others as well.