Michigan State University Extension
Preserving Food Safely - 01600352
QUANTITY: An average of 19 pounds is needed per canner load of 7 quarts; an average of 12-1/4 pounds is needed per canner load of 9 pints. A bushel weighs 48 pounds and yields 16 to 19 quarts--an average of 2-3/4 pounds per quart.
QUALITY: Select apples that are juicy, crispy and preferably both sweet and tart.
PROCEDURE: Wash, peel and core apples. To prevent discoloration slice into water containing ascorbic acid (Use one teaspoon of powdered ascorbic acid per gallon of cold water). Raw packs make poor quality products. Place drained slices in large saucepan and add 1 pint water or very light, light, or medium syrup (see directions below) per 5 pounds of sliced apples. Boil 5 minutes, stirring occasionally to prevent burning. Fill hot jars with hot slices and hot syrup or water, leaving 1/2-inch headspace. Adjust lids and process.
SYRUPS Measures of Water and Sugar
For 9 Pt. Load* For 7 Qt. Load 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 APPLES, SLICED 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 20 25 30 35
RECOMMENDED PROCESS TIMES FOR APPLES, SLICED 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
RECOMMENDED PROCESS TIMES FOR APPLES, SLICED 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 8 min. 5 lb. 10 lb. Hot Quarts 8 5 10