Well i guess like here in the uk people can tell the difference between tescos own and sainsbury alcarte version some people think they can taste the difference.
part of its due to better beef used and what have you and part is just in the mind.
But trust me a 12 pack of corned beef will go down a storm as will coffe and other similar goods
Also for most they can be stored most of our familes houses have a mini store/disply of longlife goods tins/pasta etc.