Tomato And Broccoli Salad Sandwich(Yields 24 Servings)  
["2 1/4 lb. broccoli florets", "7 1/2 lb. tomatoes, in 3/4-inch chunks", "1 lb. red onions, sliced", "1 1/2 c. low-sodium chicken broth", "1 1/2 c. olive oil", "3/4 c. lemon juice", "3/4 c. balsamic vinegar", "3/4 c. basil, chopped", "1/4 tsp. hot pepper sauce", "3/4 tsp. black pepper", "48 raisin-pumpernickel bread slices (1/2 inch thick)"]
["Blanch broccoli for 1 minute in boiling water.", "Refresh with cold water.", "Combine with tomatoes and onions; reserve."]
["broccoli florets", "tomatoes", "red onions", "chicken broth", "olive oil", "lemon juice", "balsamic vinegar", "basil", "hot pepper sauce", "black pepper", "bread"]