Preparation Steps

• Combine raspberries, sugar, and lemon juice in a large, heavy-bottomed saucepan.
• Bring the mixture to a boil over medium-high heat, stirring occasionally.
• Reduce heat to medium and simmer, stirring frequently, until the jam thickens. This usually takes about 15-20 minutes. You can test for doneness by placing a small spoonful of jam on a chilled plate. If it wrinkles when pushed, it's ready.
• Remove from heat and skim off any foam from the surface.
• Carefully ladle the hot jam into sterilized jars, leaving about 0.25 inch of headspace. Wipe rims clean, place lids on, and screw bands on tightly.
• Process jars in a boiling water bath for 10 minutes (adjust for altitude if necessary).
• Remove jars from the water bath and let them cool undisturbed for 12-24 hours.