After they have cooled, dry the eggs with a paper towel and refrigerate immediately. This will help to prevent bacteria and other contagions from growing on the eggs. If possible, place the eggs in the refrigerator as soon as they have cooled.  If the eggs are not refrigerated immediately, they can become dangerous to eat. Warmer temperatures make the egg more vulnerable to bacteria such as salmonella. Discard any eggs that have sat out for two or more hours. Keep the eggs refrigerated until you are ready to serve them. If the eggs remain out of the refrigerator for over 2 hours, you should discard them. Keeping eggs in their shells will help to prevent the egg from deteriorating; place hard-boiled eggs that still have their shells back in the egg carton, or in a sealed container. Store the hard-boiled eggs on a refrigerator shelf.  Don’t store hard-boiled eggs in the refrigerator door. The repeated opening and closing of the door can cause temperature changes, causing the eggs to rot more quickly. Keep hard-boiled eggs away from foods with strong odors. Eggs will absorb the flavors and aromas of nearby items. Keep foods such as garlic or cheese away from the hard-boiled eggs to prevent a change in flavor. Peeled hard-boiled eggs may dry out. Placing them in a bowl of cold water in the refrigerator will help to keep them moisturized, and also help to ensure they stay at a constant, cool temperature.  Change the water daily. Replacing the water every day will keep the eggs fresh as well as help to keep contaminants out of the water and the eggs. Alternately, place peeled eggs in a sealed container. Do not add water to this container, but place damp paper towels over the eggs. This will help them to stay fresh and not dry out. Change the damp paper towels daily. Whether they have been peeled or not, hard-boiled eggs will stay fresh for a maximum of 5-7 days. If they are kept longer, they may begin to rot and be dangerous to eat.  Boiled eggs go bad much quicker than raw eggs; the most obvious sign that a hard-boiled egg has gone bad is a sulfurous, rotten odor. If it is still in its shell, you may have to crack it open in order to detect any bad smell.  A gray or green yolk does not necessarily indicate that the egg has rotted. The color of the yolk is usually the result of how long the egg was boiled. If eggs are boiled too long, the yolk may turn green or gray.
अंडों को उबलने के तुरंत बाद ठंडे पानी में रख दें: सारे अंडों को उबलने के 2 घंटे के अंदर रेफ़्रिजरेट कर लें: बिना छीले सख्त उबले अंडे को रेफ़्रिजरेट करें: छीले हुए सख्त उबले अंडे को ठंडे पानी से भरे एक बाउल में रेफ़्रिजरेट करें: सख्त उबले अंडों को हफ्ते भर के अंदर इस्तेमाल कर लें: