Hi KD, thanks for the reply!
AV mentions it in the first book, on page 197 there's a topic 'Refrigeration and Storage' and he says 'raw meat wrapped, sliced or cubed and placed in large wide-mouth glass jars, usually keeps 10 days (the average is 7 days) without developing a strong odor'
In the second book there's the recipe for high meat and he does say about putting it in a glass jar and airing once every 3-4 days...
But as you say, storing it on the plate open to the air seems to work ok and of course the butcher stores it hung in the open air so I'm guessing that's the better option, just seems a little contradictory to AV's suggestion so wondered if there was another reason for the jars...
Why film over foil btw? Is the foil more likely to react with the meat? Was thinking of getting some of those mesh food covers you can use to keep flies off...
Re the plastic packaging - I notice they have the expiration date but if you open it then supposedly you should eat it with 24 or 48 hours, even if the expiration date is later. I asked the fishmonger about this and he said it was because the plastic packages had a gas in them instead of air so the food wouldn't go off...
I haven't had the balls yet to go beyond the 2 or 3 days the butcher / fishmonger says it will be ok for!