Those cost savings trickled down to the consumer, making margarine available to every strata of society. AdvertisementAdvertisementNewfoundland's margarine manufacturers were committed to keeping their customers loyal, and that meant keeping them incentivized to eat it. By 1950, the law was revised so that margarine manufacturing, importing and exporting would be regulated on the provincial level. '” Previous food substitutes — like Crisco, which replaced animal lard — were intended for cooking and couldn't be seen in the foods gracing dinner tables. That is, until we got wise to the health risks of ingesting saturated and trans fats.