The Pressure frying reference article from the English Wikipedia on 24-Jul-2004
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Pressure frying

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In a pressure frying, meat is heated to cooking temperatures but pressure is held high enough that the water within is prevented from boiling off. This leaves the meat very hot and juicy. It is a variation on pressure cooking and is mostly done in industrial kitchens.

This should be only attempted with equipment made for pressure frying. It's not safe in just any old pressure cooker.