Corn Basics

Getting Ready to Preserve Corn

  • Select only tender, freshly-gathered corn in the milk stage.
  • Husk and trim the ears, remove silks, and wash.

Canning Corn

  • Wash ears and blanch 3 minutes in boiling water.
  • Cut corn at about three-fourths the depth of the kernel. Do not scrape from cob.
  • Add ½ teaspoon of salt to pints or 1 teaspoon to quarts, if desired.

Hot Pack:

  • Add 1 cup of boiling water to each 4 cups of corn.
  • Heat to boiling and simmer 5 minutes.
  • Pack corn hot, leaving a 1-inch headspace.
  • Fill jar to 1 inch from the top with boiling hot cooking liquid.

Raw Pack:

  • Pack corn into hot jars, leaving 1-inch headspace.
  • Fill jars to 1 inch from the top with boiling water.

Remove air bubbles. Wipe jar rims and adjust lids. Process hot or raw pack in a dial-gauge canner at 11 pounds pressure or in a weighted-gauge pressure canner at 10 pounds pressure for altitudes up to 1,000 feet. Process pints for 55 minutes and quarts for 85 minutes.

Freezing Corn


  • Blanch small ears (1¼ inches or less in diameter) for 7 minutes, medium ears (1¼ to 1½ inches in diameter) for 9 minutes and large ears (over 1½ inches) for 11 minutes.
  • Cool promptly and completely to prevent a “cobby” taste.
  • Drain and package. Seal, label and freeze.

Whole Kernel Corn:

  • Blanch for 4 minutes. Cool promptly, drain and cut from cob.
  • Cut kernels from cob about two-thirds the depth of the kernels.
  • Package, leaving ½-inch headspace. Seal, label and freeze.

Cream-Style Corn:

Option # 1:

  • Blanch for 4 minutes. Cool promptly and drain.
  • Cut kernel tips and scrape the cobs with the back of a knife to remove the juice and heart of kernel.
  • Package, leaving ½-inch headspace. Seal, label and freeze.

Option # 2:

  • Cut and scrape the corn from the cob without blanching.
  • Place the cut corn in a double boiler, and heat with constant stirring for 10 minutes or until it thickens. Allow to cool by placing the pan in ice water.
  • Package, leaving ½-inch headspace. Seal, label and freeze.

For more information on preserving foods at home, request HGIC 3240, Beans, Corn & Peas, or HGIC 3040, Canning Foods at Home.

Originally published 10/01

If this document didn’t answer your questions, please contact HGIC at or 1-888-656-9988.

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