Canada's food guide

How to blanch vegetables

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Blanching is a food preparation technique that involves boiling vegetables for a short time, then submerging them in an ice bath to stop the cooking process.

Blanching vegetables

Blanching vegetables helps preserve their flavour, colour and texture. Most vegetables, such as carrots and broccoli, need blanching before freezing.

Blanching and freezing can extend the life of:

  • seasonal vegetables
  • your garden’s harvest
  • vegetables about to spoil

Some vegetables don’t require blanching, such as:

  • onions
  • peppers
  • tomatoes, unless blanching to peel
1Rinse under cool, running water. Use a produce brush to gently scrub firmer veggies

Rinse under cool, running water. Use a produce brush to gently scrub firmer veggies.

2Slice or cube, so you can easily add to recipes after freezing

Slice or cube, so you can easily add to recipes after freezing.

3Cook in boiling water for 2 to 5 minutes, depending on the vegetable

Cook in boiling water for 2 to 5 minutes, depending on the vegetable.

4Remove from boiling water and place in an ice water bath to stop the cooking process

Remove from boiling water and place in an ice water bath to stop the cooking process.

5Drain and spread on a sheet pan to prevent the vegetables from sticking together.

Drain and spread on a sheet pan to prevent the vegetables from sticking together.

Cover and place in freezer.

 

6Once frozen, remove from sheet pan and place in a freezer-safe container.

Once frozen, remove from sheet pan and place in a freezer-safe container.

Store frozen for up to 12 months.

 

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2026-03-31