Bánh giầy
Bánh giầy is a Vietnamese traditional cake. Bánh giầy is a white, flat, and round glutinous rice cake. They are wrapped in cut pieces of banana leaves. They are usually served with a type of Vietnamese sausage giò lụa. Bánh giầy can be fried to a thin crispy golden crust or be eaten with giò lụa. Another variation is called bánh giầy đậu, where ground boiled mung bean (đậu xanh)—salted or sweetened—is stuffed inside. It is very similar to other Asian glutinous rice cakes like Japanese mochi, Korean tteok or Chinese lo mai chi. Emperor Hùng Vương had many sons. Some pursued literary careers. Others excelled in martial arts. The youngest prince, named Lang Liêu, however, loved neither. Instead, he and his wife and their children chose the countryside where they farmed the land. One day, toward the end of the year, the emperor met with all his sons. He told them whoever brought him the most special and unusual food would be made the new emperor. Almost immediately, the princes left for their homes and started looking for the most delicious food to offer the emperor. Some went hunting in the forests and brought home birds and animals which they prepared into the most palatable dishes. Some others sailed out to the open sea, trying to catch fish, lobsters and other much loved sea food. Neither the rough sea nor the violent weather could stop them from looking for the best gifts to please the emperor.
Source: Wikipedia