One way to judge cheese, salamis, etc. is whether they are refrigerated at the point of sale
. Choices range from really great artisanal cheeses to supermarket Velveeta, which is use-by dated. Kraft cheese spreads in jars, especially the Old English
Cheddar, are great to keep on hand for impromptu cocktail spreads. When you visit a gourmet deli and cheeses and sausages are hanging from the rafters, chat up the proprietor and ask about shelf lives.