How to know if a restaurant is truly halal, not just 'no pork'?

Good of you to care about your colleagues. The gold standard is the official JAKIM (or the state Islamic authority) halal certification, that logo means the whole supply chain, ingredients, and handling were audited, not just absence of pork. 'No pork no lard' signs are NOT the same as halal, because halal also covers how meat is slaughtered, no alcohol in cooking, and no cross-contamination. To verify properly: (1) Look for the genuine JAKIM logo, and you can actually check the cert on the official Halal Malaysia portal by the establishment name or cert number, some fake logos float around. (2) If no cert, a Muslim colleague may still be okay with a Muslim-owned Malay/mamak restaurant based on trust, but that's their personal call, let them decide. (3) When in doubt, just ask them where they're comfortable, mamak, Malay warung, or JAKIM-certified chains are usually safe bets. Being considerate like this means a lot, respect.

As a Muslim, thank you for asking la, banyak considerate. For me personally: proper JAKIM cert I fully comfortable. Malay or mamak places I trust even without the sticker because it's the norm. But a Chinese kopitiam with 'no pork' sign I'll usually avoid because of alcohol in cooking and how utensils shared. When my office makan together, easiest is pick a certified place or a mamak, then everybody senang. Just ask us directly, we won't be offended, we appreciate it.

Tip: the official Halal Malaysia verification is free to use, key in the restaurant name and it shows if cert valid and not expired. Some places display an expired cert. Also note certification is per outlet, so one branch certified doesn't auto mean all branches are. When unsure and you want everyone comfortable, halal-certified chain or a trusted Malay restaurant is the safe default. Confirm status on the official portal if it really matters for the occasion.