Ingredients:

4 guavas (not over-ripe)
1 teaspoon lime juice
10 mint leaves
1 teaspoon cumin
Rock salt/kala namak and pepper to taste

Preparation:

Wash and without peeling, cut guavas in small pieces.
Liquidize together with lime juice and mint leaves.
Lightly roast cumin seeds, grind fine, and add to juice.
Add rock salt and pepper to taste.
Stir well and refrigerate.

Serve chilled.