Quick and easy either hot or cold (I also sometimes used Greek yoghurt instead of the sour cream):
sour cream and chives, parsley or dill (preferably fresh!)
sour cream, dill or chives, and diced cucumber) lovely with hot or cold salmon.
sour cream and a little dollop of Colemans English mustard
sour cream and a squirt of tomato paste
sour cream and meat juices
double cream, meat juices and grated cheese
For meatballs: tinned chopped tomato and a dollop of tomato paste, mixed (preferably fresh) herbs or basil on its own, sour cream or yoghurt. pre fry meatballs then add the sauce to finish cooking
And a yummy one I use to mix with tinned crab: sour cream , lime juice, capers, fresh chopped coriander, and a dash of paprika (This is best mixed with the crab meat and left overnight.)
Robbity