Rinse 4 cups fresh raspberries
Place raspberries in a saucepan
Add 2 cups sugar
Add 2 tablespoons lemon juice
Mash the berries lightly
Heat over medium heat, stirring often
Bring to a boil
Reduce heat and simmer until thickened
Skim off any foam
Test the jam on a chilled plate
Remove from heat when it reaches desired thickness
Pour into sterilized jars
Let cool before sealing
Refrigerate or process for storage