Creating Nectarine Jam is a straightforward process. Follow these steps for a successful jam-making experience:

1. Prepare the Jars: Start by sterilizing your canning jars and lids. Place them in a boiling water bath for about 10 minutes, then let them air dry.

2. Chop the Nectarines: Wash and pit the nectarines. Chop them into small pieces, leaving the skin on for added flavor.

3. Mix Ingredients: In a large pot, combine the chopped nectarines, granulated sugar, lemon juice, and ground cinnamon if using. Stir well to combine.

4. Heat the Mixture: Place the pot over medium heat. Stir occasionally until the sugar dissolves completely.

5. Add Pectin: Once the mixture is bubbling, add the fruit pectin. Stir continuously for about 2-3 minutes until everything is well mixed.

6. Boil: Increase the heat and bring the mixture to a rolling boil. Boil for 5-10 minutes, stirring frequently, until the jam thickens.

7. Test for Doneness: To check if your jam is ready, place a spoonful on a cold plate and let it sit for a minute. Run your finger through it; if it holds its shape and doesn’t run, it’s done.

8. Fill the Jars: Carefully ladle the hot jam into the prepared jars, leaving about 1/4 inch of headspace at the top. Wipe the rims to ensure they are clean.

9. Seal the Jars: Place the sterilized lids on the jars and screw the metal bands on until they are fingertip-tight.

10. Process the Jars: For longer shelf life, process the jars in a boiling water bath for about 10 minutes. Remove them and let them cool completely.

11. Store: After cooling, check that the lids have sealed properly. Store the jars in a cool, dark place.

These steps will guide you in creating incredible Nectarine Jam that you can enjoy for months!