This claims to be the oldest Indian restaurant in Thailand

Butter chicken (B155) and garlic naan (B75) is a match made in Punjabi-cuisine heaven, and by that we mean the kitchen of Royal India. What’s better than mouthfuls of hot naan slathered in curry sauce? Perhaps the lightly charred and very juicy tandoori chicken (B585). You can watch the desserts take shape on two big pans, but given how rich the food is, you may not have room. Arrive after 1:30pm to have your meal at a leisurely pace because the lunch rush is fearsome—a fan base 45 years in the making. There’s a reason Royal India’s been around that long: it serves up authentic and affordable North Indian dishes. Check out our guide to eating your way around Bangkok's Little India.