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Credit: amazon.com

Kiss those chalky, green egg yolks good bye.

Cooking the perfect hard boiled egg is one the most rewarding feats, and it's a lot easier said than done. For starters, there's no great way to check if they're finished without taking off the shell, and once you peel there's no going back. It's a fine (if not controversial) art: professional chefs have spent years debating how long to hard boil eggs and the proper technique; a quick Google search of "how to hard boil an egg" yields over 35 million results—and dozens of methods. But at the end of the day, a lot of what works is based on whether you like your yolks runny, jammy, or firm.

But have you ever seen (or held) a medium egg next to a jumbo egg and truly *sized* up the difference in weight and volume between them? It's huge. According to the USDA guidelines, a medium egg should weigh about 1.75 ounces, while a jumbo egg weighs 2.5 ounces (with large and extra-large in between the two). This means a jumbo egg weighs nearly one-and-half times what a medium egg does!

What it comes down to is that when it comes to cooking eggs, one size does not fit all. Especially when following cooking instructions, three-quarters of an ounce is actually a pretty steep difference.

Clearly, there's enough confusion surrounding the subject of making hard boiled eggs without having to worry about the size. This is where the new OXO Punctual Piercer Egg Timer ($15, amazon.com) comes in. This simple gadget cracks the code on egg-cooking by letting you select how firm you like your eggs (seven! doneness! settings!) and asking you to specify the size of the egg you're cooking (medium, large, extra-large, and jumbo). Guesswork, gone.

Even if you've never so much as boiled water before, this tool will get a perfectly-cooked breakfast on the table with zero fuss. Built-in lights display your cooking progress, too, so you can step away from the stovetop without worrying you'll overcook your eggs.

Another handy feature that the OXO timer touts is a built-in piercer, which makes a small pinhole in the shell. Some people do this to make peeling the egg easier, though not everyone recommends it, and it's not necessary to do. You don't have to use it, however, and the piercer locks away for safety when the timer isn't in use.