1. Combine carrots, pears and pineapple including juice, lemon juice,
cinnamon, nutmeg and cloves in a large, deep stainless steel or enamel
saucepan.
2. Bring to a boil; reduce heat, cover and boil gently 20 minutes,
stirring occasionally.
3. Fill boiling water canner with water. Place 6 clean half-pint mason
jars in canner. Cover, bring water to a boil; boil at least 10 minutes
to sterilize jars at altitudes up to 1,000 ft. Boil snap lids 5
minutes to soften sealing compound.
4. Measure sugar; set aside.
5. Stir fruit pectin into carrot mixture; return to a boil.
6. Add sugar; return mixture to a full, rolling boil. Boil hard 1
minute, stirring occasionally. Remove from heat.
7. Ladle jam into a hot sterilized jar to within 1/4-inch of top rim
(head space). Using a rubber spatula, remove air bubbles and readjust
head space if required. Wipe jar rim removing any stickiness. Center
snap lid on jar; apply screw band just until fingertip tight. Place
jar in canner. Repeat for remaining jam.
8. Cover canner; return water to a boil; process -- boil filled jars
-- 5 minutes at altitudes up to 1,000 ft. Remove jars.
9. Cool 24 hours. Check jar seals. Sealed lids curve downward. Remove
screw bands; store separately. Wipe jars, label and store in a cool,
dark place.