My Mother said they got the margarine and you had to stir in the yellow coloring to make it look appetizing. Of course, that was the same time she had to go out with a bucket to get Milk for the other five siblings and her Mother. Her Dad left the Family when times got too rough.
The big treat was having bread so they could make Mayonnaise Sandwiches. I did grow up eating those, but no Margarine.
My folks used to tell me about Olieole or something like that (I’m totally guessing at the spelling). Before my time, but I heard it was aweful.