Cooking rocks can be done by following these steps ¹:

1. Start by building a campfire and letting it burn down to coals.
2. Find the flat rock that you’ll use for cooking.
3. Shovel some coals underneath the main slab to start heating it.
4. Place your food on the hot rock and turn what you’re cooking every so often for even cooking.

There are many types of cooking stones in the market of different materials, including marble, granite, Himalayan salt, slate, fire clay, molten iron, and lava stone ².