In a large kettle, cover beans with water; bring to a boil. Boil for
2 minutes. Remove from the heat and let stand 1 hour. Drain and rinse
beans; return to the kettle. Cover with water again and bring to a
boil. Reduce heat; cover and simmer for 1-1/2 hours or until beans are
tender. Drain and rinse beans; place in a large bowl and cool to room
temperature. Add the onion, peppers and corn; toss. In a saucepan,
combine all dressing ingredients; simmer for 10 minutes. Pour over
vegetables and mix well. Cover and chill.
