When it comes to pho, the secret is in the broth. Pho Danh ladles it daily to discriminating diners from the location in the back of Hong Kong Market. The light yet deep beef flavor in your bowl tells you that some big bones have been simmering for days in large stock pots. Bold souls order the large, with tripe, tendon and fatty beef. Rookies should stick with meatballs and brisket. Doctor your dish with fish sauce, lime and Sriracha as you see fit. Cool your taste buds with a Vietnamese iced coffee.