This is one appetizer loved by people in Goa and I think each home has their own version of making it...
I call it a appetizer because that what people normally do drink it before their meal starts it helps to digest the heavy meals that's going to follow (that's what i think).
I love to have it with my rice and after the first part i.e either Dal or fish curry I love to end my meal by having this with rice and i love the after tangy taste that it leaves in your mouth, you feel nice and fresh.
Very simple to make
soak kokum a sour fruit found in Goa which is dried to make sol kadi (made with coconut milk) or this kokum kadi or also as a souring agent for some fish dishes.
soak about 7-8 kokums in water for about 1 hour or till the sour taste percolates into the water, add 1/2 sp asoefotida, 2 finely chopped green chillies, 2 tsp sugar for a glass of water,salt to taste and finely chopped coriander for garnish.