crab spinach salad with tarragon dressing

Ingredients

• 12 ounces flaked cooked crabmeat or 2 pkgs. fully-cooked(6-oz. each) frozen crabmeat thawed and drained
• 1 cup chopped tomato
• 1 cup sliced cucumber
• 1/3 cup sliced red onion
• 1/4 cup non-fat salad dressing or mayo
• 1/4 cup low-fat sour cream
• 1/4 cup chopped fresh parsley
• 2 tablespoons skim milk
• 2 teaspoons chopped fresh tarragon or 1/2 tsp. dried tarragon leaves
• 1 - clove garlic, minced
• 1/4 teaspoon hot pepper sauce
• 8 cups torn, washed, stemmed spinach leaves