¼ cup butter
¾ cup flour
4 cups milk
Salt to taste
Melt butter, add flour & salt. Blend together, then add milk gradually, stirring constantly. Cook until thick. Add:

2 tsp tomatoe paste
1 tsp lemon juice
2 tsp Worcestershire sauce
1 can mushrooms, fried in butter (or fresh)

Add: ½ lb cooked scallops (sautéed or boiled)
1 cold pack lobster, thawed & with juice. Boil 5 min. Put in casserole dish. Grate cheese on top & broil until brown.