This diatomite steamer stone from Ishigaki's Karari Steam Magic line is baked in a toaster together with bread or doughnuts. Soak the stone in water first; the fast-absorbing Karari diatomite takes in water quickly so you can start baking right away.
As the stone heats in the toaster, it releases steam that wraps around the food, crisping the crust while keeping the inside soft and fluffy. Simply soak, place it beside the bread or doughnuts, and run your usual toasting cycle, no extra settings are needed.
