Which off the shelf foods last the longest?

[NorthernRaider]

Sigh !!! I think that this thread has gone off the rails already, it must be a record for us, Again I say I want BRITISH goods, in British packaging not extracts from American documents. Lets look at say INSTANT POTATOE, Flakes or grains, salted or unsalted, in sealed bags or paper bags inside carboard boxes, or the stuff that comes in tubes , ideally what type of spud it is, is it best to buy small foil packets or large catering tubs, which tastes nicer Asda, Tesco, Makro or Aldi, Branded or unbranded.

The same can be applied to most of the foods we need to know about