I'll be in Paris shortly, two weekends in a row. I'm having a tough time deciding what to do for the two Sundays. I think we'll spring for something more expensive one Sunday, like Gagnaire. But for the other Sunday, I did some research, and found Yam'Tcha but didn't see many reviews on CH.
I love all sorts of food (never met a cuisine I didn't like!), but I've generally not been thrilled by fusion restaurants. At least the ones in the US, I've often felt like I could have gone to an Asian restaurant that would have been just as good for half the price. But a fusion restaurant in Paris could be a different experience.
It is on an interesting list from Alexander Lobrano a reliable critic which I stumbled upon recently - he includes Yam'Tcha in one of his recent top 10's - and the other restaurants do give his review some context: http://www.guardian.co.uk/travel/2011...
It has been on my "must try" list but as I live in HK it never makes it to the top.
I had an excellent meal at Yam'tcha about a year ago. I found their interpretation of fusion to be French preparations with a restrained use of Asian ingredients, and the tea or tea/wine pairings were delightful, beautiful presentation. The setting (pierre de taille) is very nice too. Your biggest problem is going to be getting a table, you have to call on a particular morning each month. Other options in this vein if you can't get through might be Passage 53, Sola or perhaps Agapé Substance. Enjoy