FOOD TECHNOLOGY

Detailed explanation-1: -Sugar is the preserving agent that is used to preserve food items like jams, jellies, and squashes.

Detailed explanation-2: -Put the jam into containers and freeze: Pour the jam into clean freezer containers or canning jars, leaving 1/2-inch headspace. (Plastic freezer containers with tight-fitting lids work well for storing freezer jams and jellies.) Cover the containers and let stand for 24 hours, or until the jam has set and become firm.

Detailed explanation-3: -Most cordials and squashes contain preservatives such as potassium sorbate or (in traditional cordials) sulphites, as they are designed to be stored on shelves. They keep well because of the preservatives and their high sugar content.

Detailed explanation-4: -Commercial pectins contain added acid to ensure jelling. With commercially available pectin, various fruits, berries and other ingredients can be used to make a quality jam or jelly. Also, less cooking is necessary when pectin is added. Sugar: Sugar serves as a preserving agent, contributes flavor, and aids in gelling.