1 medium onion, sliced in thin strips
1 small tomato, diced
1 small fresh hot red chili, cut into thin strips
1 small fresh hot green chili, cut into thin strips
1/4 cup fresh lime juice
fresh lime zest
Combine everything in a bowl and mix thoroughly. Let stand at room temperature for about 30 minutes before serving.
You could also add about 1 tsp of chopped fresh basil to this.