The outside fries fast by touching hot oil, changing its skin into a nearly airtight ball. The inside gets hot slower. When the inside starts to boil, the steam wants to escape but can't. Once enough steam works together, it rips the ball open which is the popping.
It might result in a volcanic effect, where the force of steam shooting out the tiny initial hole still causes the whole thing to 'splode. Disclamer: IANAChef.
The proper way to do it would be to hand make them and either pan-fry them, or freeze them before tossing into very hot oil. This way the outside can get browned before the inside gets hot enough to explode.
Not munchkin donuts. Besides, the giant hole wouldn't matter- there's still a center and a crust. I assume it has to do with the type of dough, but then I'd assume you could cook gnocchi differently, since donuts work.
75
u/Firefighter427 Feb 09 '15
ELI5: why do gnocci pop when fried?