I had frozen berries (preparing for Christmas), but in the summer of course use fresh. The berries blend. Put the saucepan 4 l on the fire, pour 3-3,5 l of purified water. Boil water, add sugar and then whipped berries. When it boils immediately turn off the heat. Infuse in a cool place. Consumed cold. With this technology saved a lot of vitamins. Even small children can cook as well, but Apple kompotik.

Berries thaw is not required.