Certo has helped generations of jam makers to achieve great tasting jams, jellies and marmalades, time after time. It is made from the skins of pressed apples or citrus fruit, natural sources of pectin. Pectin is a soluble fibre that works as a natural gelling agent. Certo is the only liquid form of pectin and helps jam makers achieve dependable results every time. Using Certo helps achieve a consistent set. With Certo jam making requires less boiling, resulting in a jam that retains the maximum flavour and colour. It is quite simply tried and trusted to deliver great jams every time!