Heartburn surgery is called fundoplication because it involves folding the fundus, or top portion of the stomach, onto the esophagus and fastening it there using stitches in traditional surgery or plastic fasteners in the case of the new surgery.

WSJ: New Surgical Option for Heartburn

Now grab a rubber spatula and fold the egg whites in to cream mixture (Folding means moving the bottom of the mixture over the top with little agitation to the stuff in the bowl, which will deflate the egg whites).

FORBES: LIVING HIGH ON THE (EGG) NOG