You can boil an egg without water by using alternative methods such as baking, steaming, or microwaving. 


1.   Baking:   Place the eggs in a muffin tin or directly on an oven rack and bake them in a preheated oven. The eggs will cook inside their shells.



2.   Steaming:   Steam the eggs by placing them in a steamer basket or on a rack above simmering water. Cover and steam until the eggs reach your desired level of doneness.


3.   Microwaving:   Although it's less common, you can microwave eggs by pricking the shell with a pin, placing them in a microwave-safe container, and using short bursts of low power until they are cooked.

4.  Electric Egg Boiler:  Also used electric egg boiler for boiling eggs without water.


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Keep in mind that these methods may produce slightly different textures compared to traditional boiling, and it's essential to monitor the cooking process to achieve the desired results.