Yule Chiffon Cake
["2 c. sifted flour", "1 1/2 c. sugar", "3 tsp. salt", "1 tsp. salt", "1/2 c. oil", "7 unbeaten egg yolks", "3/4 c. cold water", "2 tsp. vanilla", "1/2 tsp. cream of tartar", "1 c. egg whites (7 to 8)"]
["Sift first 4 ingredients together into mixing bowl.", "Make a well and add oil, egg yolks, water and vanilla.", "Beat until smooth with a spoon.", "Add cream of tartar to egg whites in a large mixing bowl.", "Beat with mixer until whites form very stiff peaks. Do not underbeat.", "Pour egg yolk mixture gradually over beaten egg whites.", "Gently fold just until blended; do not stir."]
["flour", "sugar", "salt", "salt", "oil", "egg yolks", "cold water", "vanilla", "cream of tartar", "egg whites"]