2. Wash the strawberries and put them in the pot, add rock sugar, leave a drop of water, and slowly heat them on low heat. Boil the strawberries out of the water, but keep them granular. Don't break them with a shovel.

3. After boiling, cook until it is thick. Put lemon juice before cooking, then heat for five minutes and turn off the heat.

4, pay attention to the pot must not use an iron pot, and put the prepared jam in an oil-free uncooked bottle and keep it in the refrigerator.