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Publication #FCS8317

Preparing Potatoes, White: Cubed or Whole for Canning1

United States Department of Agriculture, Extension Service2

Quantity: An average of 35 pounds is needed per canner load of 7 quarts; an average of 22-1/2 pounds is needed per canner load of 9 pints. A bag weighs 50 pounds and yields 8 to 12 quarts -- an average of 5 pounds per quart.

Quality: Select small to medium-size mature potatoes of ideal quality for cooking. Tubers stored below 45 degrees F may discolor when canned. Choose potatoes 1 to 2 inches in diameter if they are to be packed whole.

Procedure: Wash and peel potatoes. Place in ascorbic acid solution to prevent darkening. If desired, cut into 1/2-inch cubes. Drain. Cook 2 minutes in boiling water and drain again. For whole potatoes, boil 10 minutes and drain. Add 1 teaspoon of salt per quart to the jar, if desired. Fill jars with hot potatoes and fresh hot water, leaving 1-inch headspace.

Adjust lids and process following the recommendations in Table 1 or Table 2 according to the method of canning used.

Tables

Table 1. 
Table 1. Recommended process time for White Potatoes in a dial-gauge pressure canner.
  Canner Pressure (PSI) at Altitudes of
Style of Pack Jar Size Process Time

0-

2,000 ft

2,001-

4,000 ft

4,001-6,000 ft

6,001-

8,000 ft

Hot Pints 35 min 11 lb 12 lb 13 lb 14 lb
Quarts 40 11 12 13 14

*After the canner is completely depressurized, remove the weight from the vent port or open the petcock. Wait 10 minutes; then unfasten the lid and remove it carefully. Lift the lid with the underside away from you so that the steam coming out of the canner does not burn your face.

Table 2. 
Table 2. Recommended process time for White Potatoes in a weighted-gauge pressure canner.
  Canner Pressure (PSI) at Altitudes of

Style

of Pack

Jar Size

Process

Time

0-

1,000 ft

Above 1,000 ft
Hot Pints 35 min 10 lb 15 lb
Quarts 40 10 15

*After the canner is completely depressurized, remove the weight from the vent port or open the petcock. Wait 10 minutes; then unfasten the lid and remove it carefully. Lift the lid with the underside away from you so that the steam coming out of the canner does not burn your face.

Footnotes

1.

This document is Fact Sheet FCS 8317, one of a series of the Department of Family, Youth and Community Sciences, Florida Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida. Publication date: May 2003. Reviewed: August 2008. This document was extracted from the Complete Guide to Home Canning, Agriculture Information Bulletin No. 539, USDA. It was originally published on CD-ROM as part of HE 8150, Guide 4: Selecting, Preparing, and Canning Vegetables and Vegetable Products. Please visit the EDIS website at http://edis.ifas.ufl.edu

2.

Reviewed for use in Florida by Amy Simonne, assistant professor, Food Safety and Quality, Department of Family, Youth and Community Sciences, Cooperative Extension Service, Institute of Food and Agricultural Sciences, University of Florida, Gainesville FL 32611.


The Institute of Food and Agricultural Sciences (IFAS) is an Equal Opportunity Institution authorized to provide research, educational information and other services only to individuals and institutions that function with non-discrimination with respect to race, creed, color, religion, age, disability, sex, sexual orientation, marital status, national origin, political opinions or affiliations. For more information on obtaining other UF/IFAS Extension publications, contact your county's UF/IFAS Extension office.

U.S. Department of Agriculture, UF/IFAS Extension Service, University of Florida, IFAS, Florida A & M University Cooperative Extension Program, and Boards of County Commissioners Cooperating. Nick T. Place, dean for UF/IFAS Extension.