How To make Spargel In Weisser Sosse (White Asparagus In White Sauce)

29 oz White Asparagus; (2 Cans)
2 T Margarine
2 T Unbleached Flour
1/2 c ;Asparagus Liquid
1/2 c Milk
4 oz Ham;Cut into Julienne Strips
1/8 t Nutmeg; Freshly Grated
1/4 t Salt
Drain asparagus spears, reserving 1/2 cup of the liquid. Heat margarine in a saucepan. Add flour; blend. Gradually pour in asparagus liquid and milk. Stir constantly over low heat until sauce thickens and bubbles. Add cooked ham and seasonings. Gently stir in asparagus spears; heat through but do NOT boil. Serve in preheated serving dish.