"No" he said. Pause. "Have you?"
And so we realised that despite each having the best part of 11kg on our backs, and all of the hardware required to make a cup of tea, we have no tea bags.
We're now sitting by one of the Cregennan lakes tucking into flapjacks. We have any choice of a selection of dehydrated meals with us, but it's a cup of tea that would really go down nicely right now.