Chop or slice your leeks into the size you normally would when cooking leeks. Bring a large pot of water to a boil. Once boiling, submerge your leeks to blanch them for a matter of 30-45 seconds. When removing the leeks, place them into cold water to stop them from cooking further.

How long do you blanch leeks?

1. Bring a large pot of water to the boil.
2. Place your washed and cut up leeks in a blanching basket or colander and lower them into the boiling water.
3. Place the lid on the saucepan.
4. Boil the leeks for about 30 seconds (no longer than one minute).

Can you blanch and freeze leeks?

Can you freeze leeks? While leeks are available all year round, you might want to stock up and freeze them from time to time. The freezing process is quite simple: wash, cut, blanch if needed, and freeze the leeks. Remember that freezing the leeks is only best if you are using it for cooked dishes.