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I reckon if you were trapped in a location with little chance of escape, you would eat anything that came to hand, including spiders and beetles.
The process has since been perfected to include tasty varieties, roasted, fried, etc, with various coatings.
The Death Watch Beetle dipped in batter, and deep-fried, is particularly popular at parties...

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Very crunchy...and slowly appearing on Supermarket shelves*

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Paul...

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* Perhaps....

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Win 8.1 64-bit. DX11. Advent Tower. Intel i7-3770 3.9 GHz 8-core. 8 GB System RAM. AMD Radeon HD 7700 1GB RAM. DVD ROM. 2 Terra Byte SATA Hard Drive. Philips 17" LCD Monitor. Saitek Cyborg X Fly-5 Joystick. ...and a Briggs and Stratton Petrol Lawn Mower.