General cooking tips
Oven Tips : Use glass or ceramic pans in ovens. You can turn down the temperature about 25° and foods will cook just as quickly.
Buy Local Food : ...but at the same time, figure out what makes sense. It is more energy efficient to raise lambs in New Zealand and ship them to the UK than to raise them in the UK, because New Zealand lamb farming is more energy efficient. It is also more energy efficient to buy produce raised in Spain, than produce that has to be grown in greenhouses in the UK. Baby steps require figuring out which things make sense and which don't.
One of the best elements of travelling is sampling local delicacies, so please don't order a burger and chips when you are in India - not only is the meat likely to be of a poor quality (sometimes so poor that it will make you sick), but you are turning down some of the most wonderful food in the world - and possibly offending your hosts.
Cooking safety
Don't ever leave the deep fat frying pan unattended.
If you're called away from the cooker - by the phone, say, or by someone at the door - take pans off the heat. It's the easiest thing in the world to forget about them.