Spinach Dip
["1 c. mayonnaise", "1 1/2 c. sour cream", "1 c. water chestnuts, diced up", "2 Tbsp. diced onion", "garlic salt (if desired)", "1 box frozen chopped spinach, thawed, squeezed dry"]
["Mix well.", "Refrigerating overnight makes it better."]
["mayonnaise", "sour cream", "water chestnuts", "onion", "garlic salt"]