This means the egg is old, but it may be perfectly safe to use. To complete the egg float test, just gently insert your egg into the water. A cup of water works well, too. There's only one sure way to tell if an egg that floats is spoiled, and that's to crack it open in a bowl. How to Do the Egg Float Test. Crack the egg into a bowl and examine it for an off-odor or unusable appearance before deciding to use or discard it. I was just wondering because you said you grabbed them from the fridge like that's not something you normally do. Start by filling a bowl with enough cold water to cover the egg plus two inches. If you want to try the egg float test using a mason jar, make it easy on yourself, and use a wide-mouthed jar so you can get the egg out easier. The "float test" is a quick and easy way to see if those eggs in your refrigerator are still safe to use in recipes. Shake It. Hi, I stored some eggs in the fridge. It is simple to do and only takes 5 minutes to check a carton of eggs. If the egg sinks to the bottom but stands on its point, it's still good, but needs to be used soon - it's about three weeks old. (Psst: Grandma loves this trick!) If the egg sinks but floats at an angle or stands on end, the egg is a bit older (a week to two weeks old) but still okay to eat. When you buy your eggs at the grocery store, you can be certain they’re fresh—or at least, fresh enough to use. So the older the egg, the more air can penetrate its shell, causing it to float. Decomposition, or spoiling, produces sulfur gas, the cause of the "rotten egg" smell. If the egg floats to the top, and bobs along the … Soon after an egg is laid, it naturally cools, creating a small air space as its contents contract. 2. They have been there for about 1 and 1/2 months. The egg float test is the easiest method you can use to determine if it’s is safe to eat. The eggs to … (If you are looking for more of a cut-and-dry test, dissolve 2 tablespoons of salt in 2 cups of cold water. Placing your egg in a glass of water will uncover it’s freshness. A float test will remove the bloom and leave the eggs susceptible to bacteria penetration if left at room temperature. Eggs that float to the top are often considered spoiled because more air has seeped in through the shell and decomposition may have started. Albeit, visual and smell detection is the most accurate determining method. Of course, if any eggs float to the top, they shouldn't be eaten. The egg float test is an old fashioned way of telling approximately how old your eggs are. If the egg floats, it's too old and should be discarded. An egg can float in water when its air cell has enlarged sufficiently to keep it buoyant. The air cell is found at the larger end of the egg between the inner and outer membranes. 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