Why and How to Blanch Cardoons?
Cardoons are biennial vegetable plants grown for their leafy ribs. While these vegetables can be decorative, they must be blanched before they can be eaten. The stalks of cardoons are rich in fiber, mineral salts, and carbohydrates, but they are tough and bitter unless blanched. Blanching is the process of depriving parts of the plant of light to prevent photosynthesis, allowing the cardoons to become tender and delicious. So, if you’re wondering how to blanch cardoons, you’ve come to the right place!
When to Blanch Cardoons?
Blanching should begin about 5 weeks before harvest, typically in September. Be mindful of frost, as it can cause the ribs to turn black and become inedible. One helpful gardening tip is to remove the cardoons from the soil and replant them in sand in a dark, well-ventilated area. This method helps ensure proper blanching conditions. Remember, harvest should happen in the fall, and the blanching process will take an additional 4 weeks. Plan ahead and don’t wait too long to blanch, as the first frosts may catch you off guard. Also, make sure to carry out this process on dry days to prevent moisture from affecting the leaves.
How to Blanch Cardoons
The key to blanching cardoons is to prevent sunlight from reaching the leaf petioles. This process encourages the cardoons to turn white and become tender. Here’s how to blanch your cardoons:
- Remove the stems from the plant.
- Remove damaged leaves to ensure the cardoons are healthy.
- Clean the cardoons by hand, removing any unwanted debris.
- Remove dead leaves from the center of the clump.
- Tie the leaves together using string.
- Create a protective sleeve using cardboard tied with rope to shield the plant from sunlight.
- Hill up with a hoe to cover the base of the plant and protect it further.
If frost has already set in by the end of October, you can replant your cardoons in a cellar or sand to continue the blanching process throughout the winter.
Bonus: How to Cook Cardoons?
Once your cardoons are blanched, it’s time to cook them! Cardoons can be stored in the vegetable drawer of your refrigerator for 3 days if wrapped in a cloth. Do not freeze them—consume them as soon as possible. To prepare cardoons:
- Remove any leaf residue, spines, and stringy parts.
- Cut the cardoons into 5 to 10 cm long pieces.
- Cover the pieces with lemon juice to prevent them from turning black.
- Blanch the pieces for a few minutes in boiling salted water.
- Drain and rinse with cold water to stop the cooking process.
Remember, cardoons are always cooked before being eaten, so ensure you follow the steps carefully to enjoy their delicate flavor and texture!
