The country’s food agency warned against using evergreens in food after the city of Ghent suggested an unusual form of recycling: spruce needle butter.

Belgium’s Federal Food Agency on Tuesday warned people to not eat their Christmas trees after a city council suggested recipes to reuse conifers following the holiday season. The agency was forced to issue the bizarre warning after the council in Ghent City launched a campaign last Thursday encouraging people to recycle their Christmas trees to reduce waste.