The BuzzFeed has recently featured Vietnamese grilled beef wrapped in betel leaves in a short clip of praising street food throughout the world. The clip is talking about the grilled beef wrapped in betel leaves (Vietnamese called Bò nướng lá lốt), which is best when being served with beer or wine. Particularly, it is regarded as a favorite snack of many Saigonese.
In addition to this street food of Vietnam, cuberdon candy of Belgium, barbecued pork and Balut of the Philippines, Doner Kebab of Turkey, hotdog of the US, Kerak Telor of Indonesia, and the herb twigim from the Republic of Korea are also included in this clip.
You can enjoy other delicious street food in Hanoi at: http://cityinsight.vn/street-food-of-hanoi.html