2. Timed Boiling-Water Blanch — 2–5 Minutes
Bring a large stockpot of water to a rolling boil.
Carefully lower the corn into the boiling water and begin timing immediately.
- For corn that will be cut into loose kernels: Blanch the whole ears for approximately 2–3 minutes.
- For whole ears of corn: Blanch for approximately 4 minutes for small ears or 5 minutes for large ears.
Avoid overcooking the corn, as the goal is to heat it sufficiently while preserving its texture.
3. Rapid Ice-Bath Cooling — 2–5 Minutes
Using tongs, immediately transfer the hot corn into a large bowl filled with ice water.
Chill the corn for approximately the same amount of time it was blanched, generally between 2 and 5 minutes.
The corn should feel thoroughly cold to the touch.
Remove the corn from the ice bath and drain it thoroughly.
4. Remove Loose Kernels — 5 Minutes
If you prefer to freeze loose kernels, allow the blanched corn to cool completely first.
Stand an ear upright on a stable, flat surface inside a shallow bowl or over the center opening of a Bundt pan.
Using a sharp chef’s knife, carefully slice downward along the cob to remove the kernels.
Avoid cutting deeply into the woody cob core.
Repeat until all the kernels have been removed.
5. Package, Seal & Flat-Freeze
Place the loose kernels or whole ears into heavy-duty freezer bags.
Press out as much excess air as possible before sealing.
For the best protection against freezer burn, you can use a vacuum sealer if available.
Label each package with the date of freezing.
For faster initial freezing, place the bags flat on a sheet pan in a single layer.
Once the corn is completely frozen, the packages can be stacked to save freezer space.
