Although the process of making this jam is identical to that of strawberry, I am going to offer it to you so that you can also see its result. The amount is half the previous one, so you will see how the proportions are different. I have added sterilization in case you want to achieve a long-lasting conservation.
1 k. raspberry
750 m. of sugar
the juice of a lemon
half a nut of butter
These proportions can be adapted to any quantity that you want to elaborate (4 units of weight of raspberry for 3 of sugar, and half a lemon each 500 gr.)
It is important to get fresh and healthy raspberries.