Raspberry Jelly is a type of Fruit preserves, in American English, specifically a clear fruit spread consisting of firmed raspberry fruit or raspberry juice made with pectin. In British English, 'jelly' is also generally used to mean a sweet desert made by adding gelatin to fruit juice, or more commonly from commercially prepared concentrated blocks. It is made by a similar process to jam, with the additional step of filtering out the fruit pulp after the initial heating. A muslin or stockinette "jelly bag" is traditionally used as a filter, suspended by string over a bowl to allow the straining to occur gently under gravity. Its thick consistency and delicious taste make it very popular among kids. Clean raspberries, finely dice them and place it into saucepan. Pour sugar over diced raspberry and cook it to boil for about 5 minutes in low heat (stir it constantly).