Uuh -30 seems to be heavy. I think the most I experienced have been -24 but this was only once for a short time.
Up to -10 it gets uncomfortable.
Fire place, quilt, tee and warm socks. Are my choice for these days. ;-) my grandfather used to warm up his beer in winter. Not hot but just not too cold.
I am not from the North Pole So I know what you mean 😁 I am basically from the Himalayan region so experience that kind of temp once in a while. In Canberra where I work or in the Black Mountains it seldom goes below -10 your grandpa was a wise guy :)
Oh yes he was 💖
Didnt know youre drinking Vodka in the Himalayan region? Thought it would only be water and tee. Silly me.
I dont know much about this corner of earth you are living.