It's a Miracle!

We had some friends in for a drink on Saturday night.
One of them opted for a glass of white wine.
I opened the fridge and extracted a bottle of Fairtrade Pinot Grigio from Argentina, courtesy of M&S. It's a screw top. I cracked the seal.
We have several more bottles of it.
I poured a generous glass ( never let it be said we Scots are not generous - apart from the Aberdonians and the people formerly known as "living" in Edinburgh)
My friend looked at the glass.
" That's not Pinot Grigio."
I looked at the bottle.
" Yes it is. It's from Argentina."
He took a sip. And spat it out in the sink.
" It's water. And old water at that."
I swigged the bottle. And spat it out.
" It's water!"
So was the next bottle.
At that point we gave up and he had a beer instead.
Move on 48 hrs.
I had got a bottle of Irish water from M&S in Euston the other day. I opened it today, and took a swig. And spat it out. It was very old and dusty. I remarked on this.
" Ah, " my friend said. " It's clearly Pinot Grigio."