Gyukatsu Kyoto Katsugyu is a Japanese restaurant on the second floor of Siam Center in Bangkok that serves gyukatsu and several cuts of beef. It offers a Wagyu A5 set with a choice of sauces, and rice, soup, and tea are refilled. Staff explain how to grill the meat and how to use the sauces, and a small grill is provided to cook the meat further if you do not want it rare. Card payment is accepted, and tax and service charges are added separately.