No. Buttermilk taste like yoghurt; it's more acid than milk. So using it in mac and cheese will give a fairly revolting result.
In my opinion,yes,it's made out of sour milk and tastes like sour cream!
Yes, it will give it a sour taste.
No. Sour cream and heavy cream have different functions, and produce different flavors. If you don't have sour cream or heavy cream handy, find a cheesecake recipe that doesn't call for them.
Yes, you can substitute sour cream for cream cheese. For 1 cup of cream cheese substitute 1 cup of sour cream, but watch the moisture level. Sour cream has more moisture so you may want to cut back on liquid ingredients such as oil or buttermilk.
you wont get the same taste from using double cream instead of sour cream and the consistency might be a bit off.
I would use a light dip. such as buttermilk ranch.
You can substitute buttermilk as a nice, tasty alternative. So is mayonnaise.
It's acid, whether it's citrus, buttermilk, yogurt or sour cream.
It is not as thick as cream cheese, making for a less than desirable consistency, and it wouldn't taste right.
Cream cheese is the primary ingredient in any cheesecake. You can substitute, but if you did so it would be less likely to turn out with the texture and flavor of the deliciousness that it should be.
Through a fermentation process. A good example would be to find a recipe using sour cream; it will probably explain how to make the cream sour. If a recipe calls for sour cream (or sour milk) add a few drops of lemon juice or vinegar and leave until it sours. You can also buy sour cream at the supermarket.
Depends on what sort of taste you are seeking. Do you want sweet or sour or a combination thereof?