What African berry removes the sourness of lemons and limes?

There is no African berry that removes the sourness of lemons and limes.

The sourness in lemons and limes is caused by citric acid. There's no berry, African or otherwise, that can chemically remove citric acid.

It's possible you're thinking of something else. Perhaps you're remembering a fruit or ingredient that helps balance the sourness of citrus? Here are a few examples:

* Sugar: Sugar is a common way to counteract the sourness of lemons and limes in drinks and desserts.

* Honey: Honey has a natural sweetness that complements citrus flavors.

* Fruits with complementary flavors: Fruits like berries or mangoes can add sweetness and balance the tartness of citrus.

* Herbs: Herbs like mint, basil, or rosemary can add a refreshing twist and help mask the acidity of citrus.

Please clarify your question if you're looking for something specific!