1/2 cup Asian fish sauce (nuoc mam or nam pla)
1/4 cup rice vinegar
1/4 cup lime juice
2 tablespoons sugar
2 cloves garlic, peeled and minced
1 to 1 1/2 teaspoons minced hot red chili, such as Thai, serrano, jalapeño, or Fresno, or Asian red chili paste
In a bowl, mix 1/2 cup water, fish sauce, vinegar, lime juice, sugar, and garlic. Add minced chili to taste.