To prepare fruit. Sort and wash ripe pears; pare and core. Chop or grind pears. Peel orange, remove seeds and chop or grind pulp.
To make jam. Measure chopped pears into a kettle. Add orange, pineapple, cherries, and lemon juice. Stir in pectin. Place on high heat and, stirring constantly, bring quickly to a full boil with bubbles over the entire surface. Add sugar, continue stirring, and heat again to full bubbling boil. Boil hard for 1 minute, stirring constantly. Remove from heat; skim.
Fill hot jam immediately into hot, sterile jars, leaving 1/4 inch headspace. Wipe rims of jars with a dampened clean paper towel; adjust two-piece metal canning lids. Process in a Boiling Water Canner according to your altitude. .
0 – 1,000 ft. 5 minutes / 1,001 – 6,000 ft. 10 minutes / Above 6,000 ft. 15 minutes .
