I always do that. The jackets are the best part.
That's true, full of fibre, and the most nutritious part of the spud is right under the skin. When I was a child, we'd sometimes ask my mother 'can we have the potatoes all burnt, please' :) and my mother would turn the heat up really high on the cast iron pot and deliberately burn the skins, they were yummy! There was an art though in prising them off the base of the pot without breaking them to bits. Spuds were served in their jackets and peeled at the table according to individual preference.
I think there are certain similarities between the north of England approach to cooking and the Irish way.
plus cold hands, cold room
In Victorian times, didn't they prepare the pastry on a marble slab? Also my granny used a ceramic roller, not a wooden one. So temperature is definitely a significant factor in preparing pastry.