POTATOES, WHITE--CUBED OR WHOLE

Michigan State University Extension
Preserving Food Safely - 01600267
10/13/97

POTATOES, WHITE--CUBED OR WHOLE 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   Fahrenheit  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  (use  one  teaspoon   of  powdered  ascorbic
acid per gallon of  cold  water) 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   hot  jars  with  hot potatoes
and  fresh  hot  water,  leaving  1- inch  headspace. Adjust
lids and process.                                           

        RECOMMENDED PROCESS TIMES FOR WHITE POTATOES        
              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  35 min.  11 lb.    12 lb.    13 lb.    14 lb.  

Hot   Quarts 40       11        12        13        14      

        RECOMMENDED PROCESS TIMES FOR WHITE POTATOES        
          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    35 min.     10 lb.               15 lb.   

Hot      Quarts   40          10                   15       


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