Cook spinach as per package, drain, reserving 1/2 cup of liquid. Melt butter over low heat, add flour stirring until blended, do not brown. Add reserved spinach liquid and evaporated milk, stirring constantly to avoid lumps.
Add seasonings, cheese (that has been cut up into small pieces, worchestershire sauce. Stir until cheese is melted and all is blended well. Add spinach. Taste and season to taste with red pepper.
Keep warm in a chafing dish and eat as a hot dip or butter some bread crumbs, sprinkle on top and bake as a casserole. Bake at 350 until bubbly.