Onions Turn Blue

The pigments that give onions the colour behave like a litmus test. What in the hell couldve happened there.

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It sounds like when you cooked the beans it created that alkaline environment to cause the colour change.

Onions turn blue. This is the harmless result of two elements meeting in an acidic environment. Its an acid base imbalance that is corrected by a 1-3 teaspoons of vinegar. There are other alkaline elements but those rarely end up in your food.

The pigments that give onions the colour behave like a litmus test. Once upon a time the green thing in the image below was part of what we call a red onion. Why did this red onion turn green.

To maintain the red hue add a little acid such as a splash of vinegar or a squeeze of lemon juice. If you or child has a cough or feels crappy with a cold a plate of onion is not going to harm unless there is an allergy of course. The sulfur in the garlic which makes your breath smell garlicky after you eat garlic or onions combines with copper from the lemon juice and butter in some areas even water contains dissolved copper.

However whenif things get worse like wet deep cough coughing up blood coughing hard enough that you passout or lips turn blue its past time to get help. Has anyone else experienced this phenomenon. The amount of copper needed for this reaction is very small and is frequently found in normal water supplies.

The pigments that give onions the colour behave like a litmus test. Best of all the vinegar can add a flavor like sherry or balsamic. The only ones that turned bluegreengrey of the 20 were the 3 I baked in aluminum foil on an aluminum pie tin.

Why did my garlic turn blue when cooking. Onion garlic turn green when sautéed. By the way Emilie followed up the blue onion mystery with an e-mail later in the day.

What you see. They turn greenblue in an alkaline environment. Some googling is telling me that onion can sometimes turn blue in an alkaline solution but the liquids I was using were both quite acidic Orange Juice and Coke so any trace amounts of alkaline shouldve been neutralized by the acids right.

The same is true of red cabbage. A harmless reaction of a plant pigment to an alkaline basic environment Eat or toss. But according to scientists this is.

They turn greenblue in an alkaline environment. If you cook red onion with alkaline foods such as nuts lentils and some vegetables those anthocyanins revert to their blue hue. They are red in the naturally acidic onion.

They are red in the naturally acidic onion. Red onions turn blue because they contain a pigment called anthocyanin. While cooking this 3-ingredient-mixture turned a bright green colour.

They are red in the naturally acidic onion. The garlic didnt soften in the 45minutes they say but they did turn greygreenblue icky colors. The turning blue of garlic in jars with vegetable preserves is a common phenomenon.

There was a roast turkey in a separate roasting pan in the oven too. Foods high in magnesium and calcium are legumes nuts tofu leafy greens dairy and most proteins. They turn greenblue in an alkaline environment.

That pigment reacts with alkaline elements in your food like magnesium and calcium. They turn greenblue in an alkaline environment. Garlic Can Turn Blue.

Red onions that turn a bluish greenish color during cooking What it is. It sounds like when you cooked the beans it created that alkaline environment to cause the colour change. Under alkaline conditions the red hue changes to a bluer tinge.

Garlic contains sulfur compounds which can react with copper to form copper sulfate a blue or blue-green compound. The pigments that give onions the colour behave like a litmus test. Apparently this color transformation is more likely to happen when onions and garlic are chopped together as we did in the Cuisinart and then put in the pan together.

It sounds like when you cooked the beans it created that alkaline environment to cause the colour change. While cooking a massive batch of black bean burritos bound for the freezer I was sautéing garlic 20 cloves crushed and onions 4 large minced in olive oil in a Calphalon pan. Anytime you cook garlic or onions in a high-acid solutionsay you sauté them then deglaze the.

They are red in the naturally acidic onion. It sounds like when you cooked the beans it created that alkaline environment to cause the colour change. French onion soup with red onions is delicious but will turn a weird grey-blue during cooking.

It explained that red produce including onions cabbage cherries and Im guessing the grapes in jelly contain pigments called anthocyanins cyan blue. I cut the tops off like all the chefs say. The fact is that the composition of this product contains the enzyme allinin which in an acidic environment and leads to visible changes.

Which means blue garlic is not just a pickling problem.

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