Mumm made this extremely tasty Demi Sec which is a sweet, high quality champagne. Mumm is a manufacturer of high quality champagnes, and this sparkling and sweet Demi Sec champagne is one of them. Mumm has made various champagnes, all of which are of a very high quality. They have produced their champagnes as brut and as this sweet half-second and also in a number of other varieties. Mumm’s Demi Sec champagne should be enjoyed chilled.