A traditional south Indian dish is dosa, a fermented rice dough, with curries on the side. Another side is a coconut chutney, as there are a ton of coconuts here.
Here's the recipe for coconut chutney, which is awesome on just about anything.
1 whole coconut, cut into small chunks
3 small cloves garlic
thumb size piece of ginger
1 green chili
1/4 cup of roasted peanuts (if available)
Mix all of them and add water up to about 1/2" below the top of the pile. Put in a blender until smooth.
In a separate pan, add a bit of oil and cook:
1 red chili
1 1/2 tbsp mustard seed
The seeds will start to pop after the oil heats up. When that happens, add about a dozen curry leaves. Cook them in the oil until they curl. At that point, add the oil and such to the coconut mixture and blend again. Add salt to taste.