Make this homemade version in less time than it takes to run to the store. To make it gluten free I replaced the gluten-filled malt vinegar with apple cider vinegar. Tamarind, not an everyday ingredient in every kitchen, is traditional but I've listed it as optional.
Place all ingredients in a medium saucepan and stir.
Bring to a boil, stirring constantly. Simmer 1 minute. Cool.
Pour into a bottle and store in the refrigerator. Lasts indefinitely.
Makes about ¾ cup. Shake well before using.
Notes
If you don't have tamarind in your kitchen make this sauce without it. If you want to buy it and find new recipes that use this ingredient check out this post, what is tamarind and how to use it. Tamarind concentrate is the easiest, reconstitute with water (2 parts water to 1 part concentrate) stir to combine. Use in any recipe calling for tamarind paste or sauce.