Take out the small side muscle from the scallops, rinse them using cold water and pat dry.
Add the oil and butter to a wide saute pan over a high heat.
Add salt and pepper to the scallops.
When the fat starts to smoke, add the scallops, ensuring they don't touching one another.
It is VERY IMPORTANT you let the pan get sufficiently hot before adding the seafood, because this will stop the scallops from sticking!
Sear them a minute and a half per side.
The scallops should have a 1/4-inch (3/4cm) golden crust on both sides but should still be translucent in the middle.
Serve them right away!