This is simple and it is made with basic prepper food stocks. You can do this with powdered milk too. How to Make Bannock the Survival Food Rich in Vitamin C - Ask a Prepper The storage lifetime of this bread is probably not "long term", but certainly will keep for a couple of weeks if stored in a sealed container. The weak point is moisture from the fruits and the milk. One way to make this store longer is to only store the ingredients and make small batches as they are needed.