Scandinavian Salad
["1 medium head lettuce", "6 oz. sour cream", "1 Tbsp. plus 1 tsp. sugar", "1 tsp. vinegar", "1 tsp. grated onion", "1 tsp. horseradish", "1 tsp. salt"]
["Prepare lettuce.", "Blend remaining ingredients for dressing."]
["head lettuce", "sour cream", "sugar", "vinegar", "onion", "horseradish", "salt"]