Hi Rossy,
There are several different sauces Rossy....what colour is the one you're thinking of and what does it taste like?
Try this Mint Raita one though, it works a treat (it's from Pat Chapman's Curry Bible):
- 225g yoghurt (Greek is good)
- 1/2 tsp chilli powder
- 1/2 tsp garam masala
- 1 tsp sugar
- 1 teaspoon bottled mint jelly (or sauce)
- 1/4 tsp mango powder
- 1 tbsp fresh coriander (finely chopped)
- couple of drops of green or yellow (or other) food colouring (if required)
Simply mix/blend all of the ingredients together.
Layne's looks similar and will, no doubt, also do the trick.