Maya's Black bean-sweet potato Burritos

40 servings

4lbs, (8 1/2 cups)  dry black beans
3/4 cup canola oil
1/4 cup + 1 1/2 teaspoons grated fresh ginger
15 cloves garlic, minced
1/2 teaspoon cayenne
1.5 pounds (2 ¼ qts) onions, chopped
3 tablespoons cumin
3 cups celery
3 cups green peppers
1 tablespoon thyme
9 pounds yams, peeled, diced
1 1/2 cups orange juice concentrate
1 tablespoon orange peel
50 8 inch tortillas
3 gallons water

soak beans in water over night. drain and cook in lots of water until tender (30-40min after boiling). drain.

saute ginger, garlic, onion in oil until softened.

add cumin, cayenne.

add celery, peppers, thyme and sauté till tender.

in a separate pot, cook yams at rapid boil until tender but not mushy. drain.

mix all remaining ingredients, sauté, and yams together and salt to taste.

Serve with rice, salsa, salad bar, chips and sour cream.