Coffin Spinach Dip

1 10-oz package frozen chopped spinach(thaw & sqeeze out liquid)
1 cup mayonnaise
1 cup sour cream
1/2 cup chopped onion
1 package Lipton Veggie Soup Mix
1 can water chestnuts-chopped

Combine all ingredients and chill for a couple of hours to let flavors blend. Serve with crackers and bread cubes.