Sugar Cookies
["1 1/2 c. sugar", "1 tsp. vanilla", "2 c. flour", "1 tsp. cream of tartar", "1 c. shortening", "3 egg yolks", "1 tsp. soda"]
["Cream sugar, shortening and vanilla together until fluffy. Add egg yolks."]
["sugar", "vanilla", "flour", "cream of tartar", "shortening", "egg yolks", "soda"]