Raisins

Raisin Is a Dried Grape

Raisin is a dried grape. There are varieties of raisins available in the world with different grades, sizes and colours such as black, green, blue, purple, yellow, golden… etc., produced in various regions of the world and may be eaten raw or used in cooking, baking and brewing.

The English word raisin has taken from the old French “raisin” , which in turn developed from the Latin word “racemes” a bunch of grapes.

Golden Raisins

Golden raisins treated with sulfur dioxide to maintain their golden colour and dried either on the vine or on special drying racks. Raisins are produced commercially by drying harvested grape berries.

In order for a grape berry to dry, water inside the grape must be removed completely from the interior of the cell onto the surface of the grape where the water droplets can evaporate.

However, this diffusion process is very difficult because the grape skin contains wax in its cuticle, which prevents the water from passing through.

There are 3 steps to commercial raisin production which include a pre-treatment, drying and post-drying process.