2 packages (10 oz each) frozen chopped spinach, thawed
1 can (8 oz) water chestnuts, drained and finely chopped
1 cup sour cream
1 cup Yoplait® Fat Free plain yogurt (from 2-lb container)
1 cup finely chopped green onion (9 medium)
2 teaspoons chopped fresh tarragon leaves or 1/2 teaspoon dried tarragon leaves
1/2 teaspoon salt
1/2 teaspoon ground mustard
1/4 teaspoon pepper
1 garlic clove, crushed
Rye crackers, rice crackers or raw vegetables for dipping, if desired

1. Squeeze excess moisture from spinach until it is dry. Mix spinach with remaining ingredients except crackers in glass or plastic bowl.
2. Cover and refrigerate 1 hour to blend flavors. Serve with crackers.