Mainstay is a survival 'cake' that looks like cornbread mix before baking. It has a slight lemony flavouring and comes in foil packets of 9 bars each. It is not at all unpleasant to eat, boring maybe. I dined on a unit for 3 days. It was more than adequate nutritionally. On day four I went to a pizza parlour. Remember, there are 3 pertinent diets; the one our body needs, the one our culture/religon dictates and what advertising tells us is good.