Heat the chopped pears, pineapple juice, sugar, and lemon juice in a large stock pot over medium heat.
Simmer, stirring often for 30 minutes or until the pears begin to soften.
Using the immersion blender, puree the pears to a smooth texture.
Continue to simmer for 2-3 hours, or until the pear puree develops a golden color and begins to thicken and gel slightly.
Canning
Wash all of the jars, lids, and rings in hot soapy water.
Fill the water bath and bring to a boil.
Using a funnel, ladle the pear honey into the jars, leaving 1/2 inch headspace at the top of the jars. Run the bubble popper through the jars to release any trapped air and adjust the quantities if needed.
Wipe the rims of each jar with a clean dry paper towel.
Place the lids on the jars and tighten the rings fingertip tight.
Using the jar lifter, place the jars into the boiling water bath.
Cover the water bath and process the jars for 10 minutes.
Remove the jars from the water bath to a towel lined cutting board. Leave the jars untouched for 12 hours. Label and date the jars and store. If any jars do not seal, refrigerate and use first.