I love my cast-iron teapots; however, for Christmas, I received a set of teacups to match my latest acquisition. Do I pre-warm them like I do the pot? Or is the intent for it to leech some heat out when poured so it's drinkable faster? They appear to be traditional Chinese-style: small and without handles. They also appear to be enameled on the inside, to match the pot.
Also, is there anything I should know about the care and keeping of them above and beyond the usual cast-iron advice (no soap, dry well, et cetera)?