It was in the late 40's, during rationing due to WWII. And boy, do I remember, that always became my job, to mix that darn yellow dye into the horrid white glob. Guess at the time, it was better than nothing because there was no butter available. I also remember saving gum wrappers, the metallic part, for the war effort and string, great balls of string were collected. Have no idea what that was used for. A thought just struck me, possibly butter was availabe, but you had ration coupons and you had to figure carefully how many coupons you had and what you could get for them, so if you didn't have enough points for butter, you got margarine.