Gooseberry jam for winter

Since my early youth I have been collecting various recipes. According to an old habit, I drink tea not with sugar, but with jam and I like to drink from a saucer. I have a lot of jam recipes, I cook myself, I ask my neighbors, I experiment.
Today I will tell you how to make gooseberry jam. The recipe is Polish, I'll tell you in Russian.
Sort and wash the gooseberry berries. Never neglect thorough washing and the workpieces will be perfectly stored. Berries for this jam need firm, slightly unripe. Choose them of the same size and the same maturity. Use a clean needle or an awl to prick each berry. Pour the berries into a colander (a metal sieve is also suitable) and lower into boiling water for 2-3 minutes. Cool the berries and put them in a cooking dish.
It is necessary to prepare sugar syrup from sugar and water and pour it over the raw materials for jam. It is necessary to cook by the method of multiple cooking. Bring to a boil and put in a cold place for 8-10 hours. Bring to a boil again on a low heat and boil for 3-5 minutes and again in the cold. Repeat the procedure two more times and cook until tender.
To prevent jam from fermenting and becoming covered with mold, process containers, sterilize cans and lids for canning.