you can use a couple of drops of vinegar
Personally, the best apples I have ever had for toffee apples were Red Delicious or Honey Crisp apples, but, just recently I have found a new apple called a Pink Pearl apple. On the inside they are pink. I tried to make a toffee apple out of it and it was wonderful! So ask your stores if they have any!
apples Don't use apples. Your recipe is probably looking for the citric acid in order to make it work properly try lime juice or vinegar.
Peaches or apples, nectarines.
Any white wine vinegar will do. Failing that, try apple cider vinegar.
Citric acid is a good substitute for vinegar. Just use Lemon or Lime juice instead of vinegar.
can I use white wine vinegar in a chocolate cake insted of white vinegar
I'm. Not sure
It is used for many things, usually for food. It can be used for apples or salads.
brown rice vinegar OR Chinese black vinegar (cheaper) OR red wine vinegar + sugar or honey OR sherry vinegar OR fruit vinegar
You can use 3/4 C of vinegar
Sort of: toffee gets some of its flavour from butter so it's not going to taste the same if you use margarine. Also, margarine typically is a bit more fat volume per cup because butter has some milk solids, so you may find the toffee just a bit oilier if you don't adjust amounts.
you can and cant