stove

When cooking, boil water in the jug first, then transfer to the pot on the stove.

The jug is more efficient in heating up the water as it is enclosed and designed for the job,

Cook at a longer, lower temperature as apposed to a higher, shorter one. Slow cooking retains more of the nutrients in the food and transfers less heat to the air around it.

Do not park the refrigerator next to your stove, a heater or an uninsulated wall, as this would reduce its efficiency.

Put a pot of soup or a stew on the woodburner in the morning - by the time you're ready for dinner it will be cooked. Pitta breads do well on the top too.