Is it safe to use an extension cord or adapter with this egg cooker?
No, the manual explicitly states not to use an extension cord or adapter with this appliance. The unit must be plugged into a grounded 3-prong outlet, and the ground prong must not be removed.
From the official Nostalgia Mymini 7 Egg Cooker manual, page 6
Have a follow-up question?
Answers from the official manual.
Common questions