Make this recipe a recipe that people in that category can eat. categories: ['dairy_free'], recipe: melt the butter in a small saucepan. add the celery seed, salt and pepper and mix well. in a bowl, combine the vinegar, sour cream, mayonnaise, green onion and parsley. add the butter mixture and mix well. chill and add to2 - 3 pounds of cooked cooled potatoes. chill until ready to serve.

Target recipe: place sugar, flour, dry mustard, salt, and pepper in the top of double boiler. blend in 1 cup water until thoroughly mixed. place over direct heat and bring to a boil, stirring constantly but gently. cook 1-2 minutes longer after mixture comes to a boil. stir in vinegar. beat the egg yolks slightly then stir 3 tablespoons of the hot mixture into the eggs. beat vigorously. immediately blend the egg mixture into the mixture in the top of the double boiler. place over simmering water and cook 3-5 minutes. stir slowly to keep mixture cooking evenly. remove from heat and stir in margarine. cool and store in refrigerator in tightly covered jar. before using, thin to desired consistency with cream, fruit juice or vinegar.