Bit of a tangent, but there are further psychological reasons why hot drinks are used in sales situations: https://news.yale.edu/2008/10/23/hot-coffee-we-see-wa

Bit of a tangent, but there are further psychological reasons why hot drinks are used in sales situations: https://news.yale.edu/2008/10/23/hot-coffee-we-see-warm-heart-yale-researchers-find https://news.yale.edu/2008/10/23/hot-coffee-we-see-warm-hear...