Popular street food in Hong Kong. These are crispy on the outside and fluffy on the inside. Gai Daan Jai (Tsai) means Little Chicken Eggs. Other names include Puffe, Bubble Waffle, Eggettes, Egg Puffs and I am sure there are other names. Served for breakfast or an afternoon snack. Either served flat or rolled with fruit in the center. You must have a special egg waffle pan to make these. You can find a nice one at Williams Sonoma.