About Certo
Certo is a premium liquid fruit pectin that has helped home preservers make perfect jams and jellies since its introduction in 1912. Originally developed as Douglas Pectin by inventor Robert Douglas, the product proved a phenomenal success, leading to the formation of the Certo Company which was incorporated in 1923 with Robert Douglas as president. This heritage makes Certo one of the oldest and most trusted names in home preserving. The brand's popularity led to its acquisition by the Postum Corporation in 1929, which purchased all 400,000 shares of the Certo Company. Today, Certo operates under the Kraft Heinz umbrella alongside its sister brand Sure-Jell, giving home preservers access to both liquid and powdered pectin formats from a single trusted manufacturer with over a century of expertise. What distinguishes Certo liquid pectin is its convenience and reliability. The liquid format can be added directly to quick-and-easy freezer jams and jellies without requiring the boiling and constant stirring needed to dissolve powdered pectin. This makes Certo particularly popular for no-cook recipes and beginners who want consistent results. The premium formulation ensures proper gelling for everything from classic strawberry jam to marmalades and fruit preserves. UK shoppers can find Certo liquid pectin at Tesco, providing access to professional-quality preserving ingredients for the jam-making season. Whether creating traditional cooked jams or modern freezer preserves, Certo delivers the reliable setting power that has made it a kitchen essential across generations.