In a bowl or a glass jar fitted with a lid, whisk the fish sauce, rice vinegar, sugar, garlic and crushed red pepper until the sugar dissolves. Use as a dipping sauce for spring rolls or as a dressing for Vietnamese noodle salads. Refrigerate for up to 3 months.
½ cup fish sauce*, ½ cup seasoned rice vinegar**, 3 tablespoons granulated sugar, 2 cloves garlic, ¼ teaspoon crushed red pepper
Notes
*Fish sauce: Use high quality fish sauce in this dipping sauce for balanced flavor.**Rice vinegar: I use seasoned rice vinegar instead of regular rice vinegar because it already has a little sugar in it and I like it best for salad dressings. However, if you prefer to have more control over the amount of sugar in the dressing, use regular rice vinegar and add more or less sugar, to taste.