I have a better method-
as I purchase, prepare and enjoy food with my friends and family I-
take note of what was consumed with gusto versus practicality;
subconsiously delete my refridgerator stock;
note any 'hankerin's';
note any upcoming events or holidays;
consider the season;
consider what's in stock;
consider what's worth the price requested;
make a choice.
It might sound like a lot when its listed out (and I could continue...) but the fact is this occurs without conscious effort. Why would I purchase electronic devices to track my food consumption when my mind can do these computations effortlessly? Just another goo-ga...let's go to Mars instead!