Best Bleu Cheese Dressing
["1 1/2 c. mayonnaise", "2 Tbsp. lemon juice", "2 egg yolks, beaten", "3 oz. or more Bleu cheese", "16 oz. carton sour cream", "1/2 tsp. garlic powder", "1/2 tsp. onion powder", "1/4 tsp. salt", "1/4 tsp. pepper"]
["Mix all ingredients well and refrigerate.", "Let set for several hours for flavors to blend."]
["mayonnaise", "lemon juice", "egg yolks", "cheese", "sour cream", "garlic powder", "onion powder", "salt", "pepper"]