According to our friends at Delish, adding a teaspoon of baking soda to your boiling pot of water will help the shell peel off seamlessly. Why? The alkaline in the baking soda will help your egg whites loosen up from the shell, making it easier to peel.
Adding white vinegar or apple cider vinegar to your pot of water allegedly results in softer, easier-to-peel eggshells. That's because the acid in vinegar dissolves some of the calcium carbonate that makes up the egg's hard exterior.
Let the eggs sit in the cold water for 15 minutes to cool (you can add a few ice cubes to make them cold if using immediately), or refrigerate overnight. Peel under cool running water. Whether you peel them right out of the pan or the next day doesn't matter. Either way, they peel easily.
Shocking your recently boiled eggs by submerging them into a bowl of ice water is key. The quick cooling of the hard-boiled eggs causes the egg whites to contract, freeing them from the membrane. If you let them cool for about 15 minutes, the peeling is much easier.
Drop the eggs into boiling water. Eggs added to a pot of boiling water rather than brought to a boil along with the cold water will be easier to peel.
This is because the egg white or “albumen” in a fresh egg has a relatively low pH level, making it acidic. When cooked, these fresh egg whites bond strongly to the inner shell's membrane. As an egg ages, the pH level rises and the inner membrane is less likely to bond to the albumen, so the shell peels off much easier.
Because older eggs have more alkaline, you shouldn't add vinegar to the cooking water, though some recipes recommend it. Adding about a teaspoon of baking soda to the cooking water increases the alkalinity, which will make the eggs easier to peel later on.
If you're still struggling, peel the eggs under cold running water, which will help separate the shell from the egg. For a more eco-friendly solution than keeping your tap running, you can just peel the eggs in a water bath. The water will have the same effect of slipping under the shell and helping dislodge the egg.
Adding a teaspoon of vinegar to the water may help keep egg whites from running out if an egg does crack while cooking. Also some people find adding 1/2 teaspoon of salt to the water helps prevent cracking as well as making the eggs easier to peel.
Add salt and vinegar to the water.
The salt permeates the shell a little bit, and the vinegar helps to break down the shells, making them easier to peel.
Some people prefer to peel their hard-boiled eggs before storing – and that's A-OK. You'll just need to take a few extra steps: Transfer hard-boiled eggs to a bowl of cold water immediately after cooking to help them cool down faster. Peel the eggs under running water.
Give the eggs at least five minutes in the ice bath before you try to peel them—letting them cool may help make it easier to peel them, but it's also so you don't burn your hands.
Apparently super fresh eggs are difficult to peel because the pH of the white is more acidic which causes it to adhere to the shell membrane more tightly. Two solutions here – use older eggs or add a little bicarb soda to the cooking water to increase the pH.
While overcooking hard-boiled eggs does have its obvious drawbacks — rubbery dry whites and pale crumbly yolks — it actually does make them easier to peel. That's because one of the determining factors in peel-ability is the pH of the egg — the higher (less acid), the easier.
How Do You Boil Eggs So They Don't Crack? Salt in the water can help prevent cracking. Vinegar in the water can also help keep the egg whites from running out of an egg while cooking if a small crack develops.
The vinegar in the water makes the eggs easier to peel. Here's why: The vinegar's acid not only dissolves some of the calcium carbonate in the shell, it also helps the whites set faster. Running the hard-boiled eggs under cold running water as you're peeling, meanwhile, helps the shell separate from the membrane.
Lower your eggs straight from the fridge into already-boiling water, or place them in a steamer insert in a covered pot, steaming at full blast on the stovetop. If boiling, lower the heat to the barest simmer. Cook the eggs for 11 minutes for hard or six minutes for soft.
Use Baking Soda for Hard Boiled Eggs
For those of you who use fresh farm eggs, I also recommend adding about ¼ – ½ teaspoon of baking soda to the water as you cook your eggs in addition to aging them. This will cause your eggs to have more of a smell when cooked but will make them easier to peel.
NaCl or salt is added to the water when boiling eggs as the addition of salt or other non-volatile solid help in reducing the vapour pressure of the liquid. Which in turn increases, the boiling point i.e the temperature at which the vapour pressure equals the atmospheric pressure.