Check the listing for details. Petromax Cast Iron Dutch Oven Stack Grate Trivet, Prevent Bottom Burning. Color: Black, Condition: New. Listed at 52.98 USD. The Petromax Stack Grate made of solid cast iron manages a first-class heat distribution exactly what you need for baking, braising and steaming at several levels in the Dutch Oven. Your meat, vegetables and cakes are a success and do not burn, for the device stands on three 1.7-inch-long feet that manage the ideal distance from the bottom of the pot. Moreover, the Stack Grate fits particularly well in the Dutch Oven ft4.5 and in all bigger pots. You can use this grate immediately thanks to its (grade 3 soybean oil) seasoned finish. In the pot, in the fire or as a trivetFor steaming in the Dutch Oven, put in one grate or simply pile up several grates. If the grate is directly in the embers, it quickly fries the perfect grill marks onto your piece of meat.