- Step 1: Collect stones Collect stones, taking care to remove debris. The stones should be about the size of a tennis ball.
- TIP: Avoid stones that are porous and likely to fracture or crack when heated.
- Step 2: Build a fire Build a fire and wait for the coals to get white-hot.
- Step 3: Place the stones in the fire Place the stones on the hot coals.
- Step 4: Place some of the heated stones in the water Remove some stones from the fire using tongs and place them in the container of water.
- TIP: Tap the stones several times against each other to remove ashes before placing them in the water.
- Step 5: Replace the stones as they cool Replace the cooled stones in the water with fresh hot stones from the fire. Continue doing this until the water comes to a boil.
- FACT: Some Native American tribes used heated stones to boil water in special water-tight baskets coated with gruel.
You Will Need
- A fire
- A container of water