A Houston power couple shares their bánh mì secret success sauce

Have you ever had a Bahn Mi? It's a popular Vietnamese Sandwich and Viet Tran has perfected the art of making them. We're taking a look inside the local business that started selling their delicious sandwiches from a gas station to now a top yelp-rated restaurant in the country. Tessa chatted with Viet and his wife, Michelle, about the delicious secrets to their success.