Tho Yuen Restaurant in Penang and Clan Dim Sum Restaurant in Kuala Lumpur are both longstanding dim sum restaurants that specialize in traditional Cantonese dim sum. While both face competition from other local dim sum restaurants, they have each developed signature dishes and maintain quality food and service to retain customers. A key difference is that Tho Yuen has been operated by the same family for over 70 years, while Clan Dim Sum was founded more recently in 2001 by its current owner.