Satay Sauce

Fry 1 chopped onion until brown.
Add  
3 cloves garlic chopped coarsly
1 tbspn Thai red curry paste (preferably Mae Ploy brand)
150g peanut butter
2 tbspns fish sauce
6 tbspns brown sugar
Juice 1/2 lemon
1 cup water

Simmer together for 10 mins until the starch in the peanut butter thickens the sauce.

Taste and adjust flavour to your liking with extra salt, sugar, chilli or lemon juice.