9 Steps to Freezing Corn Step 3, Blanch the Corn After you have silked the corn you need to wash and then blanch the cobs. Don't crowd the corn too much. Blanch cobs for 6 minutes for cut corn. Blanch 8 minutes for corn on the cob. Timing starts when you put the corn in the boiling water. ⇦ Back to Step 2 On to Step 4 ⇨Back to Steps in Freezing Corn Page 2 |