[something168581]

Thre are absolutely legitimate ingredient variation and quality differences in different parts of the world.

Taking your example of Kerrygold butter, have you ever tried it? It's _very_ good. I've had various other "premium" butters even sourced locally, and while they are also good in their own ways, there is a distinct flavor difference which I'm willing to pay for.

So if you as a company want to make your customers happy (and keep them as customers) by continuing to provide some certain specific aspect of your product that can only be achieved by producing it in a certain specific location, it's not reasonable to say "just make it local to where you sell it".