Bitter Leaf Soup, also known as Ofe Onugbu is a popular Nigerian soup. Bitter leaf Soup is peculiar to the Igbo tribe of Eastern Nigeria. A lot of non-Igbos shy away from bitter leaf soup (Well, I did for the longest time) because they think that, true to it’s name, it is a very bitter soup. But they can’t be more wrong; Ofe Onugbu does not taste bitter in the slightest. The leaves have to be thoroughly washed to get rid of the bitterness before it’s added to the soup.