Produce
The world is shrinking as regards the availability of different food stuffs from every nation and as the more travelled demands more exotic ingredients. However, I encourage you to not just eat well but to eat locally and seasonally - http://www.eattheseasons.co.uk/ - and seek out the best quality ingredients for your budget. I am a long term advocate of Farmers Markets - http://www.edinburghfarmersmarket.co.uk/ and encourage you just to visit them for yourself and witness the amazing quality of local ingredients on display and support the true food heroes out there.