If a tea is en te and the tea is teen,
then the coffee should be kaffeen!
Oh well, maybe it was too easy to be true.
Usually you won't have two e's after one another unless you are supposed to pronounce them both. Either because one has an accent (kafeen or kaféen, the café) or because it's a compounded word (you can split it up, like trinity treenighet).
Tea is so short I guess it is an exemption.
Only as a part of tenåring, teenager. And in a numeral called ørten which roughly means "a whole lot of"
Since "dere" is this the plural version does that mean it's a question aimed at more than one person?