Recently, a friend was telling me how back in his school days in University of Nigeria, Nsukka (decades ago) he and his roomies would substitute groundnut for egusi in their soup. It was quite intriguing to hear a guy passionately share his cooking experience. Before then, I have heard people mention groundnut soup but combining groundnuts, tomatoes and leaves were considered (by me) as being quite absurd. Thus, I have never given a try out a thought.