What is it?
Native to Africa, this pantry ingredient, derived from a pod-like edible fruit, is sour when young, and sweet when it's older. Hint: you'll find it in your bottle of Worcestershire sauce.
Please leave your answer in the comments, and let us know whether you have this ingredient in your pantry.
[Last week's answer: Arrowroot, cornstarch, potato starch and tapioca all are gluten-free.]
You can find most answers to The Pantry Quiz by using the search box at right, at the top of the page, to hunt for clues. Come back next Saturday for the answer to today's quiz question.
Disclosure: The Perfect Pantry earns a few pennies on purchases made through the Amazon.com links in this post. Thank you for supporting this site when you start your shopping here.