In the sixties the ration packs we had were 'lettered' A to H, some were not very interesting, H turned up seven times out of ten with 'M & V', (mutton and veg) but, I think, it was either B,F or G that was most popular and the most rare.
Standard essential extras, carried by the individual, was a large packet of curry powder, even the M & V became edible when spiced up!