10 oz. frozen spinach
1 c. mayonnaise
1 c. sour cream
1 med. onion, chopped fine
1/4 c. (or more to taste) water chestnuts, chopped fine
1 pkg. dry vegetable soup

Thaw spinach; press between paper towels to reduce moisture. Combine rest of ingredients; chill well. Serve in hollowed out pumpernickel round with pieces of pumpernickel or in hollowed out cabbage with crackers.