Preheating
If you're boiling, roasting, or baking a dish that will cook for an hour or more, don't bother preheating your oven. Even for breads and cakes, never preheat for longer than 10 min. If you reduce the amount of time your oven is on by one hour per year, you'll save an average of two kw hours of energy.
Restaurants
Take home what you don´t eat, and ask for a little packaging as possible. Use it for your dog or as a compost for your lawn or garden. This reduces food scraps and the disposal costs that restaurants bear.
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