done, john! As much as I would like to buy organic food, high prices put me off.
I usually go to Asda after 6pm or around 7 o'clock when they start putting reduced price labels on vegetables. So far I've been very lucky because most of the reduced price stuff I've bought have been able to keep for some days (example, fresh coriander 42p--3 to 5 days). I've also bought baby pakchoi for 32p when it used to sell for £1.50. I also buy certain canned vegetables, example tinned potatoes from Tesco 15p, this is convenient if I don't have time to boil/peel fresh potatoes.
all the best for your data collection :-)
love satchi