Okay, so that's a bit extreme, and I must confess to having allowed a cup or two to pass my characters' lips. But it's a nasty habit that is best avoided. Think about it. Two characters sit down with a nice cup of tea (or coffee) and talk about their problems/what's on their minds. By definition, the scene is static. You're going to have to work very hard to get much action going on - fondling the sugar tongs, perhaps? A bit of kitchen table stroking? Consider what you could add to the flavour of your novel by setting the scene elsewhere.
For my most recently written novel, Kissing Mr Wrong, in the second draft I took some tea drinking scenes, whisked them away from their domestic location and set them: window shopping down Milsom Street in Bath; standing in the queue for the Banksy exhibition at Bristol City Art Gallery; buying samosas from the Guildhall deli; folding leaflets and stuffing envelopes for a mailshot. Same conversations, same scene intentions, but now lots of fun details to play with and for the characters to comment on.
Take your characters away from the tea cups and give them something fun to do. Giving up tea and coffee is good for your novel's health.
