evidence: Does an ingredient in Nutella cause cancer? [...] The EFSA named margarine and "pastries and cakes" as possible sources for exposure, but Nutella was not specifically mentioned. [...] Ferrero told Reuters that it uses an industrial process that it keeps temperatures just below 200degC and uses low pressure to minimize contaminants. The process takes longer and costs 20 percent more than high-temperature refining, but is safe, according to the Nutella owner.