Omble Chevalier à la Genevoise refers to a famous dish from the Canton of Geneva in Switzerland which is made of Omble (chevalier), Arctic char (fingerling/grayling) from the Lac Leman on the French/Swiss border. Omble chevalier à la Genevoise is served with the famous Sauce Genevoise, a delicate local sauce made from sparkling white wine, fresh herbs and spices, butter and a drop of cream.