Michigan
State University Extension
Preserving
Food Safely - 01600773
10/13/97
QUANTITY: An average of 17-1/2 pounds is needed per
canner load of 7 quarts; an average of 11 pounds is needed
per canner load of 9 pints. A bushel weighs 50 pounds and
yields 16 to 25 quarts--an average of 2-1/2 pounds per
quart.
QUALITY: Choose ripe, mature fruit of ideal quality
for eating fresh or cooking.
PROCEDURE: Wash and peel pears. Cut lengthwise in
halves and remove core. A melon baller or metal measuring
spoon is suitable for coring pears. To prevent
discoloration, keep pears in an ascorbic acid solution
( use one teaspoon of powdered ascorbic acid per gallon of
cold water). Prepare a very light, light, or medium syrup
(see directions below for syrup), or pack pears in apple
juice, white grape juice, or water. Raw packs make poor
quality pears. Boil drained pears 5 minutes in syrup,
juice, or water. Fill hot jars with hot fruit and
cooking liquid, leaving 1/2-inch headspace. Adjust lids
and process.
SYRUP
Syrup Approx. Cups Cups Cups Cups
Type % Sugar Water Sugar Water Sugar
Very 10 6-1/2 3/4 10-1/2 1-1/4
Light
Light 20 5-3/4 1-1/2 9 2-1/4
Medium 30 5-1/4 2-1/4 8-1/4 3-3/4
*This amount is also adequate for a 4 quart load.
PROCEDURE: Heat water and sugar together. Bring to a boil
and pour over raw fruits in jars. For hot packs, bring
water and sugar to boil, add fruit, reheat to boil, and fill
into jars immediately.
RECOMMENDED PROCESS TIMES FOR PEARS, HALVED IN
A BOILING-WATER CANNER
Process Times at Altitudes of
Style
of Jar 0- 1001- 3001- over
Pack Size 1000 ft. 3000 ft. 6000 ft. 6000 ft.
Hot Pints 20 min. 25 min. 30 min. 35 min.
Hot Quarts 25 30 35 40
RECOMMENDED PROCESS TIMES FOR PEARS, HALVED
IN A WEIGHTED-GAUGE PRESSURE CANNER
Canner Pressure (PSI) at Altitudes of
Style
of Jar Process 0- Above
Pack Size Time 1000 ft. 1000 ft.
Hot Pints 10 min. 5 lb. 10 lb.
Hot Quarts 10 5 10
RECOMMENDED PROCESS TIMES FOR PEARS, HALVED
IN A DIAL-GAUGE PRESSURE CANNER
Canner Pressure (PSI) at Altitudes of
Style
of Jar Process 0- 2001- 4001- 6001-
Pack Size Time 2000 ft. 4000 ft. 6000 ft. 8000 ft.
Hot Pints 10 min. 6 lb. 7 lb. 8 lb. 9 lb.
Hot Quarts 10 6 7 8 9