Primo has always been at the pinnacle of innovation and diligently trying to make your Primo Grill, better. grills. The Primo half-moon cast iron dual-purpose griddle for your Primo Oval LG grill is the best of both worlds. On one side, the griddle features a smooth pre-seasoned surface that is perfect for creating a delicious breakfast, searing or stirfrying vegetables. On the other side, a grooved side allows you to grill or sear and get those perfect sear marks. Regardless of how you use the Primo (365) cast-iron griddle, you'll be cooking in ways that aren't capable of any other charcoal grill on the market.