Michigan State University Extension
Preserving Food Safely - 01600304
10/13/97
For blackberries, blueberries, currants, dewberries,
elderberries, gooseberries, huckleberries, loganberries,
mulberries, raspberries:
QUANTITY: An average of 12 pounds is needed per canner
load of 7 quarts; an average of 8 pounds is needed per
canner load of 9 pints. A 24-quart crate weighs 36 pounds
and yields 18 to 24 quarts--an average of 1-3/4 pounds per
quart.
QUALITY: Choose ripe, sweet berries with uniform
color.
PROCEDURE: Wash 1 or 2 quarts of berries at a time.
Drain, cap, and stem if necessary. For gooseberries, snip
off heads and tails with scissors. Prepare and boil
syrup if desired. Add 1/2 cup syrup (medium syrup - 5 1/4
cups water to 2 1/4 cups sugar for 9 pint or 4 quart load, 8
1/4 cups water to 3 3/4 cups sugar for 7 quart load), juice
or water to each clean jar.
Hot pack--For blueberries, currants, elderberries,
gooseberries, and huckleberries, heat berries in
boiling water for 30 seconds and drain. Fill hot jars
and cover with hot juice, leaving 1/2-inch headspace.
Raw pack--Fill hot jars with any of the raw berries,
shaking down gently while filling. Cover with hot
syrup, juice, or water, leaving 1/2-inch headspace.
Adjust lids and process.
RECOMMENDED PROCESS TIMES FOR BERRIES
WHOLE, IN A BOILING-WATER CANNER
Process Time at Altitudes of
Style
of Jar 0- 1001- 3001- over
Pack Size 1000 ft. 3000 ft. 6000 ft. 6000 ft.
Hot Pints 15 min. 20 20 25 Hot Quarts 15 20 20 25
Raw Pints 15 20 20 25 Raw Quarts 20 25 30 35
RECOMMENDED PROCESS TIMES FOR BERRIES, WHOLE, IN
A WEIGHTED-GAUGE PRESSURE CANNER
Canner Pressure (PSI) at Altitudes of
Style
of Jar Process 0- Above
Pack Size Time 1,000 ft. 1,000 ft.
Hot Pints 8 min. 5 lb. 10 lb. Hot Quarts 8 5 10
Raw Pints 8 5 10 Raw Quarts 10 5 10
RECOMMENDED PROCESS TIMES FOR BERRIES,
WHOLE, 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 8 min. 6 lb. 7 lb. 8 lb. 9 lb. Hot Quarts 8 6 7 8 9
Raw Pints 8 6 7 8 9 Raw Quarts 10 6 7 8 9