Rol San is such a staple dim sum place in Chinatown. Even if you don't know the name of the restaurant (like myself for many years), it's always "that place with the all day dim sum sign". And for all day dim sum it's actually pretty good. The flavours are there and nothing tastes like it's been sitting out for too long. I'm not a fan of fried foods but the deep fried tentacles are a must here - crispy and never too oily. This place is always busy but the turnover rate is actually pretty fast. It's pretty effective that they just wrap all the dirty dishes up with the tablecloth and then it's onto the next. This place is open late and serves a wide variety of Chinese food aside from dim sum.