Was given this as a gift for Christmas.
I have tried all sizes and the first cup is not hot, just hot enough to drink the first sip.  Second cup is Luke warm.  This is very disappointing.  It is an expensive coffee/tea maker.  I cannot find any info on how to keep the coffee hot.  Would appreciate information on this. Makes excellent coffeee.  Would be a great coffee/teapot if it kept it hot.