A delightful homemade jam bursting with the flavors of blueberries and warm spices.
Combine the blueberries, lemon juice, sugar, cinnamon, allspice, and cloves in a large pot.
Crush the blueberries slightly to release their juices for a smoother jam.
Cook the mixture over medium heat, stirring frequently, until it thickens to your desired consistency.
Use a candy thermometer to ensure the mixture reaches 220°F for proper gelling.
Ladle the hot jam into sterilized jars, leaving 1/4 inch headspace.
Wipe the rims of the jars clean before sealing to ensure a proper seal.
Process the jars in a boiling water bath for 10 minutes to seal.
Adjust the processing time based on your altitude to ensure safety.
Allow the jars to cool completely before storing in a cool, dark place.
Listen for the popping sound as the jars seal, indicating they are properly sealed.