 The most popular way to consume Cenovis, however, is to spread it on a slice of buttered bread, as stated on the product's packaging (or it can be blended into the butter and spread on bread or as a filling in croissants and buns).Cenovis is popular in Switzerland (particularly Romandie).It was developed in Rheinfelden in 1931, on the initiative of a master brewer called Alex Villinger, and was subsequently produced by the company "Cenovis SA".