Michigan State University Extension
Preserving Food Safely - 01600190
10/13/97

POTATOES, SWEET--PIECES OR WHOLE

Dry-packing sweet potatoes is not recommended.              

     QUANTITY:   An average of 17-1/2 pounds is  needed  per
canner  load of 7 quarts; an average of 11 pounds is  needed
per  canner load of 9 pints.  A bushel weighs 50 pounds  and
yields  17  to  25 quarts--an average of  2-1/2  pounds  per
quart.                                                      

     QUALITY:  Choose   small  to   medium-sized   potatoes.
Potatoes should  be  mature and not too fibrous.  Can within
1  to  2 months after harvest.                              

     PROCEDURE:   Wash  potatoes  and boil  or  steam  until
partially  soft  (15  to 20 minutes).   Remove  skins.   Cut
medium  potatoes, if needed, so pieces are  of uniform size.
CAUTION.  DO  NOT  MASH  OR  PUREE PIECES.   Fill hot  jars,
leaving 1-inch headspace.  Add 1 teaspoon salt per quart  to
jar,   if   desired.   Cover  with  your   choice  of  fresh
boiling water  or medium syrup (5-1/4 cups water, 2-1/2 cups
sugar  for  9 pint  load or  4 quart load; 8-1/4 cups water,
3-3/4   cups  sugar  for  7  quart   load)  leaving   1-inch
headspace.   Adjust lids and process.                       

      RECOMMENDED PROCESS TIMES FOR SWEET 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  65 min.  11 lb.    12 lb.    13 lb.    14 lb.  
Hot   Quarts 90       11        12        13        14      

      RECOMMENDED PROCESS TIME FOR SWEET 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    65 min.     10 lb.               15 lb.   
Hot      Quarts   90          10                   15       

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