Hidden Hanoi.
Get up to your knees in Vietnamese cookery or if you like street food, they do tours as well as classes. 147 Nghi Tam / Tay Ho / 091 225 4045 / hiddenhanoi.com.vn / also try Hanoi Cooking School for tailor made courses / 44 Chau Long / Ba Dinh / 3715 0088 / hanoicookingcentre.com