Michigan State University Extension
Preserving Food Safely - 01600875
10/13/97

TOMATOES - WHOLE OR HALVED (PACKED RAW WITHOUT ADDED LIQUID)



QUANTITY: An average of 21 pounds is needed per canner
load of 7 quarts; an average of 13 pounds is needed per
canner load of 9 pints. A bushel weighs 53 pounds and
yields 15 to 21 quarts--an average of 3 pounds per quart.


PROCEDURE: Wash tomatoes. Dip in boiling water for 30
to 60 seconds or until skins split, then dip in cold water.
Slip off skins and remove cores. Leave whole or halve.


Acidify by adding two tablespoons of bottled lemon
juice or 1/2 teaspoon of citric acid per quart of tomatoes.
For pints, use one tablespoon bottled lemon juice or 1/4
teaspoon citric acid. Acid can be added directly to the
jars before filling with product. Add sugar to offset acid
taste, if desired. Four tablespoons of a 5 percent acidity
vinegar per quart may be used instead of lemon juice or
citric acid. However, vinegar may cause undesirable flavor
changes. Add 1 teaspoon of salt per quart to the jars, if
desired. Fill hot jars with raw tomatoes, leaving 1/2-inch
headspace. Press tomatoes in the jars until spaces between
them fill with juice. Leave 1/2-inch headspace. Adjust
lids and process.


RECOMMENDED PROCESS TIMES FOR RAW WHOLE TOMATOES
WITHOUT ADDED LIQUID IN A BOILING-WATER CANNER


Process Times at Altitudes of
Style
of Jar 0- 1001- 3001- 6001-
Pack Size 1000 ft. 3000 ft. 6000 ft. 8000 ft.


Raw Pints 85 min. 90 min. 95 min. 100 min.
Raw Quarts 85 90 95 100



RECOMMENDED PROCESS TIMES FOR RAW WHOLE
TOMATOES WITHOUT ADDED LIQUID IN A
DIAL-GAUGE PRESSURE CANNER


Canner Gauge Pressure (PSI) at Altitudes of
Style
of Jar Process 0- 2001- 4001- 6001-
Pack Size Time 2000 ft. 4000 ft. 6000 ft. 8000 ft.


Raw Pints 40 min. 6 lb. 7 lb. 8 lb. 9 lb.
Raw Quarts 40 6 7 8 9


Raw Pints 25 11 12 13 14
Raw Quarts 25 11 12 13 14


RECOMMENDED PROCESS TIMES FOR RAW WHOLE TOMATOES
WITHOUT ADDED LIQUID IN A WEIGHTED-GAUGE
PRESSURE CANNER


Canner Gauge Pressure (PSI)
at Altitudes of
Style
of Jar Process 0- Above
Pack Size Time 1000 ft. 1001 ft.


Raw Pints 40 min. 5 lb. 10 lb.
Raw Quarts 40 5 10


Raw Pints 25 10 15
Raw Quarts 25 10 15


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