Mix in the pumpkin, sour cream, vanilla extract, lemon juice, cinnamon, ginger, nutmeg, and cloves.
1 (15 oz.) can pumpkin puree, ¼ cup sour cream, 2 teaspoons vanilla extract, 2 teaspoons lemon juice, 2 teaspoons ground cinnamon, ½ teaspoon ground ginger, ¼ teaspoon ground nutmeg, ¼ teaspoon ground cloves