Iru

Iru looks like dark brown, slightly wrinkled beans or a mashed paste. It hits your nose with a massive, funky aroma—like extra-mature blue cheese mixed with gamey meat, roasted coffee, and dark chocolate. In your mouth, it’s an absolute umami powerhouse that tastes incredibly savory.

How It's Made

Making iru is a labor-intensive craft where women boil rock-hard African locust bean seeds for hours, pound off the hulls, and boil them again. The tender beans are packed into leaf-lined calabash gourds, where native Bacillus bacteria drive an alkaline fermentation over two to three days. Finally, the beans are sun-dried, transforming into umami bombs as their proteins break down.

The Story

For centuries, communities across West Africa have used fermentation to turn the incredibly tough, otherwise inedible seeds of the locust bean tree into a dietary staple packed with nearly 40 percent protein. Long before modern, factory-produced bouillon cubes existed, indigenous cooks developed this brilliant method to unlock the seed's dense nutrition and incredible flavor. Today, despite the convenience of commercial seasoning cubes, home cooks and top chefs alike continue to seek out traditional iru because no artificial product can ever replicate its deep, historical soul.