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Publication #FCS8196

Selecting, Preparing, and Canning: Blender Ketchup1

United States Department of Agriculture, Extension Service2

Blender Ketchup
Use an electric blender and eliminate the need for pressing or sieving.
24 lbs ripe tomatoes
2 lbs onions
1 lb sweet red peppers
1 lb sweet green peppers
9 cups vinegar (5 percent)
9 cups sugar
1/4 cup canning or pickling salt
3 tbsp dry mustard
1-1/2 tbsp ground red pepper
1-1/2 tsp whole allspice
1-1/2 tbsp whole cloves
3 sticks cinnamon

Yield: About 9 pints

Procedure: Wash tomatoes and dip in boiling water for 30 to 60 seconds or until skins split. Then dip in cold water, slip off skins, core, and quarter. Remove seeds from peppers and slice into strips. Peel and quarter onions. Blend tomatoes, peppers, and onions at high speed for 5 seconds in electric blender. Pour into a 3- to 4-gallon stock pot or large kettle and heat. Boil gently 60 minutes, stirring frequently. Add vinegar, sugar, salt, and a spice bag containing dry mustard, red pepper, and other spices. Continue boiling and stirring until volume is reduced one-half and ketchup rounds up on a spoon with no separation of liquid and solids. Remove spice bag and fill jars, leaving 1/8-inch headspace. Adjust lids and follow process times for regular ketchup according to the recommendations in Table 1.


Table 1. 

Recommended process time for Tomato Ketchup in a boiling-water canner.


Process Time at Altitudes of

Style of Pack

Jar Size

0 - 1,000 ft

1,001 - 6,000 ft

Above 6,000 ft



15 min



*After the process is complete, turn off the heat and remove the canner lid. Wait five minutes before removing jars.



This document is FCS 8196, a series of the Department of Family, Youth and Community Sciences, UF/IFAS Extension. Publication date: May 2003. Revised: June 2008 and March 2011. Reviewed : February 2014. 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 8149, Guide 3: Selecting, Preparing, and Canning Tomatoes and Tomato Products. Please visit the EDIS website at


Reviewed for use in Florida by Amy Simonne, assistant professor, Food Safety and Quality, Department of Family, Youth and Community Sciences, UF/IFAS Extension, 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.