Tea and coffee pots at Glenridding pop up cafe

We were walking from Glenridding and went to their pop up cafe in the village hall. The toilets were wrecked in the floods and they served us wonderful tea, coffee and cakes as part of their fund raising efforts. The tea and coffee pots were shiny silver. This is a well-known piece of Physics. Silver surfaces are very poor emitters of infra-red heat radiation. The lower the rate at which thermal energy is emitted, the longer the drink remains at a good temperature for drinking. But I wondered if the different shapes of the pots was to do with Physics. Internet answers such more culinary reasons. They say that tea pots have a wider cross-section due to the need to stir the tea to disperse the flavour. If the coffee has been made from ground coffee, the grindings will sink to the bottom. The taller the pot, the more liquid can be decanted before the grindings start to come out to. Of the various answers on the Internet that you can choose, I thought these the most sensible. Do your own research and see what you think!