I would say that sambal belacan is Malaysian, but it's quite difficult to draw a hard line between Malaysia and Indonesia, given the amount of shared history and movement of people and goods throughout the region. But that's ultimately my point: Malaysia and Malaysian cuisine are a product of the meeting of diverse influences. Malaysian cuisine is an example of a spectacularly successful fusion of cuisines. And that's why Roti Canai, Hainanese Chicken Rice, and Kangkung Belacan are all Malaysian. I know a Singaporean who would argue with you over that claim... or is Singapore just getting lumped into Malaysia (hee hee)? Which of those dishes are not Malaysian, as far as a Singaporean is concerned? And since you brought it up, are there any Singaporean dishes which are uniquely Singaporean and not served in Johor? Singaporean char kuay teow is Singaporean. I don't think they serve it sweet in Johor. Is chwee kueh Singaporean as well?