01 -
Set up a boiling-water canner and warm clean half-pint or pint jars. Keep jars hot while you prepare the zucchini mixture.
02 -
Wash zucchini well, peel it, and remove large mature seeds if needed. Cut into 1/2-inch cubes for tidbits or shred for a crushed-pineapple texture.
03 -
Combine zucchini, pineapple juice, bottled lemon juice, and sugar in a large nonreactive pot. Bring to a boil, then reduce the heat and simmer uncovered for 20 minutes.
04 -
Ladle the hot zucchini and liquid into hot jars, leaving 1/2 inch headspace. Remove air bubbles, adjust headspace if needed, and keep the zucchini covered with liquid.
05 -
Wipe rims, apply lids and bands fingertip-tight, and process in a boiling-water canner for 15 minutes at 0-1,000 feet. Process 20 minutes at 1,001-6,000 feet or 25 minutes above 6,000 feet.
06 -
Turn off the heat, remove jars carefully, and cool undisturbed for 12-24 hours. Check seals, label, and store sealed jars in a cool dark place.