What does Tatsuya mean? “Tat” is one of the names Chef-proprietor Ronnie Chia is known by, and Tatsuya means House of Tat. One of the joys of eating at the House of Tat is the fact that you get to eat produce that you might only get to eat when you visit Japan. Just be prepared to pay for the pleasure (S$280++/pax). Go for Tatsuya’s famous aburi (roasted) sushi.