Last Saturday, Olin and me tried Gang Gang Sulai located in Mangga Dua Square 3rd floor. Because of their promotion between April 10 - May 10 for 40 K (buffet) / nett per person, we decided to go there. They only give us four kind of meal : beef, chicken, fried soun, and spicy fried squid. The squid and soun taste not too good. The chicken is standard and beef is quite delicious. First, we got three portions of beef meat, 1 portion of chicken meat, fried soun, and squid. We also got ice tea (refill) included their promotion. So, u can eat and drink as much as u can for 40K/nett. It is very worth to try :), so hurry up.