Pineapple Cake
["2 c. flour", "1 1/2 c. sugar", "1 1/2 tsp. baking soda", "pinch of salt", "1 (No. 2) can crushed pineapple", "2 tsp. vinegar"]
["Mix first (6) ingredients well with spoon, pour into greased, floured pan.", "Bake 30 minutes at 350\u00b0."]
["flour", "sugar", "baking soda", "salt", "pineapple", "vinegar"]