2 c. milk
1 tbsp. flour (4 tbsp. for thicker sauce over rice or noodles or bread)
2 tbsp. butter
1 tsp. salt (or a little less)
Dash of pepper
1/4 c. diced celery or 3 sprigs parsley
1 thin slice onion (optional)
1 can crabmeat or any 1 c. of any kind fish, canned or fresh

Combine all ingredients. Blend until smooth. Heat over low heat, stirring occasionally, until mixture reaches near boiling point and is thick. Keep warm and serve. If 1 tablespoon flour--as soup; if 4 tablespoons flour--as bisque over rice or noodles or toast.