An egg piercer pierces the air pocket of an eggshell with a small needle to keep the shell from cracking during hard-boiling. If both ends of the shell are pierced, the egg can be blown out while preserving the shell (for crafts). It was invented by Paul Pelzel in 1966.
- "What is an Egg Piercer?". wiseGEEK.com. Retrieved 1 December 2012.
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