Denmark: Ovaltine and Marmite
According to the advertisement, you either really like it or dislike it. As far as Marmite goes, the Denmark government dislikes the things. That at least is the summary that many people from other countries have attracted following a ban on the difficult brownish fungus draw out.
The revenue ban makes sure a law reducing items prepared with included natural vitamins. Meals massive Kellogg’s withdrew some manufacturers of morning meal from Denmark when the regulation approved in 2004, but until now Marmite had runaway the interest of Danish regulators.