- Save cardboard milk cartons (the 1 litre ones) coated with wax.
- Prepare a sub with meats and cheese etc
- Wrap in tinfoil then damp newspapers (regular newspapers if it is already raining) and put inside the carton
- Light the carton on fire and let it burn down
- sometimes you will have to relight it — great match lighting practice for the kids
When it’s done your sandwich will be cooked. Make sure to use thick tinfoil so it doesn’t burn.