0
You cooked it too hard and too long. The gray-green is a chemical reaction between iron in the yolk and sulfur in the white. It's hard to control the cooking of a hard-boiled egg, especially if you start out with refrigerated eggs. In most countries, they don't refrigerate eggs, and they'll last months that way. Get your eggs out of the refrigerator a day ahead if you must boil them. Avoid cooking them too long, and plunge them into cold water to stop the cooking when you're done. Eggs are delicate, and boiling water turns them rubbery as well as producing that discoloration. Or do it the smart and easy way. Just put the eggs in the oven (I use a half-sheet pan, but my neighbor uses a muffin pan) and bake them. Eggs are creamy, not rubbery, if you cook them in the oven. The perfect temperature is supposedly 154F, but my oven has a digital temperature control that has 5 degree increments, and I don't trust ovens to be perfect temperature, so I set the oven to 160F, and come back in an hour or two. Time isn't critical.I've heard of people leaving them in for 18 hours and they're still just fine.
Wiki User
∙ 14y ago
Wiki User
∙ 14y agoIt could well be associated with the chicken's diet. This is more likely to occur if they are free-range when hens can forage for different food. Chlorophyl, if eaten in sufficient quantities especially in Spring, can make the white of an egg greeny colour. I've seen a similar effect in geese who were fed a diet of carrots one Winter when not only their eggs became pink but the geese themselves took on a pinky colour. In the same way flamingoes turn pink after eating shrimps.
But if you are referring to a boiled egg with a green egg white, it is because it was cooked at too high of a temperture, placing it in cold water after cooking prevents this or just cooking it at a lower temp.
Wiki User
∙ 13y agoIt's the sulphur in the egg yolk
Add your answer:
Earn +20 pts
Why do egg yolks turn green when hard boiled on propane?
cooking on propane has nothing to do with it. The reason your egg yolks turn is because they eggs have been cooked too long.
If you leave eggs boil to long will they turn green?
No, they will just get really hard, and taste terrible.
Why would eggs turn black while cooking?
eggs are acidic. they turn green when you cook them on a aluminum pan. and the pan turns black. it is because of chemical reaction. It also may be over cooked. All eggs become black when you cook them for an extended time.
What is the general for cooking eggs?
In general, it comes down to adding eggs to boiling water with a pinch of salt (so that the shell comes off more easily) and boiling it for roughly 5, 10 or 15 minutes. After 5-6 minutes it will be a soft boiled egg, with runny yolk and stiff eggwhite. At this stage it might not yet be fully clear of bacteria and germs. Around 8-10 minutes it will be a boiled egg, the yolk will be yellow to orange and the egg should be fine to eat, and easy to cut. After 10 minutes, it becomes progressively more hard-boiled, eventually turning the center of the egg green. Spa-boiled eggs, which are placed in an oven at about 190 degrees and left overnight, eventually turn entirely green.
Why green leaves turn pale when boiled in water?
on boiling leaves loose chlorophyll
Can you hard boil a egg in the microwave?
yes but if you do it to long it will blowup and it makes a mess so be carefull You must first put a small pin whole at each end of the egg. If you microwave more than 60 - 70 seconds you will still get a mess. My wife is still hunting me down for that mistake
Why does egg pasta turn green before it is boiled?
Egg pasta should not be green unless it has spinach or some other flavouring in it which would change its colour from the usual beige colour. It certainly should not "turn" green.
Perfect hard boiled eggs?
Place eggs in a large pot. Cover with 2 inches of cold water. Heat over medium high heat until water begins to boil. Once boiling, turn off the heat, cover the pot and let sit for 12 minutes. Rinse the eggs with cold water
How do you know when an egg is done?
add a drop of vinegar to the water, bring to boil, and gently slide the egg(s) into the water. Boil for 10 minutes then remove from hot water for a cold water bath.
Are hard boiled eggs supposed to have a runny yolk?
Battery Hen's usually produce a runny white which spreads across the pan, when their eggs are cooked. A true free range egg white sits nicely around the yolk when cracked into the fry pan. Therefore the difference is diet, free range hen's graze on grass and dig up things in the soil and also eat insects, snails, worms etc. The conclusion then in my opinion is make sure there is a more varied diet.
What is the general rule for cooking eggs?
In general, it comes down to adding eggs to boiling water with a pinch of salt (so that the shell comes off more easily) and boiling it for roughly 5, 10 or 15 minutes. After 5-6 minutes it will be a soft boiled egg, with runny yolk and stiff eggwhite. At this stage it might not yet be fully clear of bacteria and germs. Around 8-10 minutes it will be a boiled egg, the yolk will be yellow to orange and the egg should be fine to eat, and easy to cut. After 10 minutes, it becomes progressively more hard-boiled, eventually turning the center of the egg green. Spa-boiled eggs, which are placed in an oven at about 190 degrees and left overnight, eventually turn entirely green.
How long to hard boil a dozen eggs?
If you put them all in the same pot then as long as you would boil a single egg, about 3 minutes for soft boiled or 5-6 minutes for hard boiled. It's actually 10 mins if u want a dozen eggs hard boiled WELL, and 7 mins if u want them slightly soft/runny.
