there are some eateries that serve their penang prawn mee with chili padi sambal sauce in the broth. those are sextremely spicy. burns my tongue. one such place is layang layang in milpitas. it’s run by a penang woman. and i keep telling her it’s too spicy. the better penang prawn mee doesn’t use chili padi in the sambal broth. it uses belachan and prawn head and shell broth with toned down chili sauce - i.e. broth is prepared by frying prawn heads and shells with belachan first then adding pork bone stock. shallots and garlic are deep fried separately and used as garnish rather than part of the broth. and sambal is served on the side. many shotcut this laborious longwinded method by “cheating” with chili padi sambal (as paste for the broth) which already contains belachan, garlic, shallots.