A grill griddle closes the gap between grate and pan: the solid flat-top surface is perfect for eggs, vegetables, fish and delicate foods that would fall through the bars. As a plancha it heats evenly and delivers a crisp sear. Here you will find griddles and plancha plates for common gas grills.
The grate adds char and grill marks, the flat-top griddle gives even searing with no flare-ups. Many systems combine both in one split plate.
A cast iron flat top griddle holds heat longest, while ceramic-coated plates clean easily and need less oil. Even heat distribution matters most for consistent results.