Cook margarine and flour in a suitable pan over medium high heat, stirring constantly with a wire whip for 2 minutes, then remove from heat and set aside.
Combine water, chicken broth, onion, celery and carrot in a suitable pot and bring to a boil.
While heating, cut the processed cheese into 1-inch chunks. Once soup comes to a boil, stir in the cooked flour and margarine and continue cooking for 3 minutes, stirring continuously. Reduce heat and stir in cheese until completely melted. ( Do not allow it to scorch.) Stir in the Tabasco sauce, Worcestershire sauce, cream, lemon peel and chopped broccoli. Return to a simmer then remove from heat.Makes 4 Source: