Raspberry jam, apricots and plums

Cook sugar, fruit and 10 cl of water for 20 minutes, stirring carefully.

During the last 5 minutes of baking, reduce to low heat, cover the pot.

Note some general rules about jams: take only healthy fruits for the preparation of jams; wash the fruit, remove the stones or the berries; counted 1000 g of sugar for every 1000 g fruit; don't compromise overcook at a time; take 1000 g for cooking: the sugar crystallizes and the jams will retain their beautiful color; Cook over medium heat until it forms a slight froth on the jam, then fill the jars; pour liquid paraffin on jam or stretch a cellophane paper pots; Let cool slowly the jam and keep it in a dry place with low light.