How to cook your vegetables so they stay bright green (2024)

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How to cook your vegetables so they stay bright green (1)

Richard Cornish

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How to cook your vegetables so they stay bright green (2)

My 95-year-old mother always adds a pinch of bicarbonate of soda to green beans, peas etc. She says it both keeps the greens bright and tenderises them so they cook more quickly. What does the bicarbonate do? R.Paterson

We grew up in the country. My grandmother lived in the city more than an hour's drive away. We would call her when we were leaving the farm to come to hers for Sunday lunch. I believe that was when she started boiling the vegetables. They were so tender. No resistance to the teeth. At all. She added bicarb of soda, or sodium bicarbonate, to her vegetables. The bicarb makes the water alkaline, which in turn makes the hemicellulose and pectin in the plant cell walls more soluble in water. This makes the veg softer. It also makes some of the compounds in the chlorophyll, the stuff that makes leaves green, leach out. So more of the green compound, which is good for you, ends up in the water.

To retain the green, cook the vegetables in lots of boiling water. There are enzymes in green vegetables that break down chlorophyll, which are released when you cut vegetables or cook them. They are knocked out by heat so putting vegetables into a big pot of boiling water deactivates the enzymes before they can break down the chlorophyll. Briefly steaming greens is the best way to retain their flavour and nutrients.

How to cook your vegetables so they stay bright green (3)

I want to have a clam bake. Can I do it at home? L. J.

A clam bake is an American culinary tradition learned from the American Indians living on the north-east coast of the US. It is a feast involving the shared gathering of corn, lobster and clams, the building of a fire to heat stones and the digging of a pit in which the food is cooked. Traditionally it was held on a beach where there were both rocks and soft sand to dig the pit and seaweed to line it. If you have a private beach, you'll have no worries.

In a 1969 Time-Life Foods of the World book I found instructions for mesh-lined wooden boxes that are 66 centimetres square and 12 centimetres deep. These are stacked on top of each other and sit in a sea water-filled metal tray over a wood fire. The secret to a clam bake is the seaweed. Kelp is best. I have tried steaming corn and prawns in kelp-lined bamboo baskets and there was definitely the tang of the sea imparted into the corn but it was more an experiment than a recommended way of cooking.

How to cook your vegetables so they stay bright green (4)

Letters

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On quinces E. Mitchell writes: "I make an upside down quince cake by laying quince pieces on the bottom of a cake tin, sprinkling with brown sugar and pouring over a simple pound cake batter. I cook as usual, adding an extra 10 minutes to the cooking time. I allow the cake to cool a little and turn the cake out on a pretty plate and serve with pure cream while it is still warm."

Send your vexing culinary conundrums to brainfood@richardcornish.com.au or tweet to @Realbrainfood.

Brain Food by Richard Cornish is out now from MUP (RRP $19.99, e-book $11.99).

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How to cook your vegetables so they stay bright green (5)Richard Cornish writes about food, drinks and producers for Good Food.

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How to cook your vegetables so they stay bright green (2024)

FAQs

How to cook your vegetables so they stay bright green? ›

For fresh vegetables, the best way to cook them and maintain peak color and peak nutritional value is to start off by using the blanch and shock method. After that, when they are to be cooked, don't over cook them. To blanch and shock, boil them for 1-2 minutes and then submerge them in ice water for a few minutes.

How to keep vegetables bright green when cooking? ›

The solution? It's simple: you have to reduce cooking time in order to preserve the colour. Whether in water, steamed or stir-fried, cooking green vegetables for 5-7 minutes will protect the chlorophyll against acidic damage.

What is the best way to get green vegetables to retain their color? ›

The trick to keeping your vegetables colorful while boiling them is to add baking soda to the pot of water. The addition of baking soda will turn your water alkaline (or basic), as opposed to acidic.

Does baking soda keep vegetables green? ›

We got some surprising results. Baking soda does help green vegetables retain color, but it causes undesirable color changes in red cabbage—it turned blue. The science can be distilled to this: Adding baking soda to cooking water makes it slightly alkaline, which stabilizes the green color of chlorophyll.

Why add baking soda to boiling green beans? ›

Your Beans Will Cook Faster

Well, creating an alkaline (or basic) environment by adding a small amount (about 1 teaspoon per cup of dry beans) of baking soda to your soaking/cooking water can actually help your beans cook faster.

Why put baking soda in collard greens? ›

In the case of collard greens, baking soda's utility is threefold, serving as a flavor enhancer, a tenderizer, and a color protector. Baking soda is an alkali salt possessing the tenderizing and flavor-enhancing properties of regular salt.

What cooking methods retain the color in vegetables? ›

To preserve the taste and color of vegetables during cooking, follow these tips: blanching, steaming, stir-frying, roasting, adding acid, and using fresh vegetables. Blanching involves boiling vegetables in salted water and then transferring them to an ice water bath to stop the cooking process.

How to retain the green color of spinach while cooking? ›

How to keep spinach stay green while you cook it - Quora. Lower the heat, avoid adding salt and cook the spinach for the shortest time possible, preferably without forcing the moisture out of the leaves.

Can you put baking soda in boiling water for vegetables? ›

Some people (especially food service establishments relying upon your satisfaction) add an alkaline ingredient, such as baking soda, to the cooking water to help retain the color of green vegetables. This is a bad practice, however, and you should avoid adding baking soda when boiling any type of vegetable.

How long should green vegetables be cooked? ›

2-5 minutes boiled (never wait for the green to leach into the water), 5-6 minutes steamed or 3 minutes sauteed in garlic and olive oil should yield firm, delicious, iron rich veggies.

Which vegetables change color when cooked? ›

Broccoli, green beans or asparagus turn olive green after cooking. Chlorophyll gives these vegetables a nice green colour but they turn yellowish after coming into contact with acidic substances. Plant cells are protected by a wall, even if they contain a lot of acidic substances. The wall breaks down during cooking.

What is the best way to cook green vegetables so they stay firm and bright? ›

Whether you're cooking green beans, spinach, broccoli, brussels sprouts or peas, the goal is for them cooked through, but still firm enough to slightly resist your bite. That's tender-crisp. The best way to achieve this (and keep your veggies green) is by blanching, roasting or sautéing them.

Is it better to clean vegetables with vinegar or baking soda? ›

The vinegar effectively removed pesticides but left a residue that affected the taste. A 10 percent saltwater solution also worked really well, but the most effective method still seems to be a baking soda solution. Tap water is enough to remove unwanted dirt, debris, and bacteria from an apple.

How to keep broccoli bright green when cooking? ›

Green vegetables contain chlorophyll, when chlorophyll is cooked, it produces carbon dioxide. Since you have to cover the vegetables to steam them, the chlorophyll turns a drab, grayish color. You can prevent this by boiling the greens, in salted water. Use a large amount of water, then add salt.

How can you prevent changes in color during the cooking of vegetables? ›

How vegetables retain their colour during cooking
  1. Don't cook them for too long. As a general rule, you shouldn't heat fruit and vegetables for too long if you want them to retain their colour during cooking. ...
  2. Don't forget to chill them. ...
  3. Use salt. ...
  4. Use bicarbonate of soda.

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