Easy Maryland Cream of Crab Soup

Here is a very simple recipe for Maryland Cream of Crab Soup. • 4 Cups of Whole Milk • 1 Cup Heavy Cream • ¾ Cup of All-Purpose Flour • 1 Stick of Butter • ¼ Cup Finely Chopped Onion • 1 TBSP Old Bay • 2 TBSP Cream of Sherry • ¼ lb Claw Crab Meat