Steps
1. Clean, wash and soak the beans overnight.
2. Cook them in the same water until soft and mash, adding some of cooking water.
3. Peel and chop the onion and fry with the curry powder until light brown.
4. Beat the eggs with a little water.
5. Add the fried onion and the eggs to the mashed beans and stir well.
6. Add salt and serve.

Source
Food and Agriculture Organization of the United Nations (1991), Post-harvest and processing technologies of African staple foods: a technical compendium, ISBN 92-5-103076-6, Rome