1 tablespoon thick shrimp paste
1 teaspoon sugar
1 teaspoon minced lemongrass (optional)
1 tablespoon lime juice
1 teaspoon minced chili

Add shrimp paste to a bowl. Stir regularly and add lime juice little by little. Keep stirring until bubbles appear. Then, add sugar, minced chili and minced lemongrass (optional). Season again.