Introduction to Tamsui Snacks: There are many fish ball and fish cake shops on both sides of Zhongzheng Road in Tamsui Old Street, including many old shops with a long history, such as Deyu Fish Balls, Keke Fish Balls, Weixiang Fish Balls, Xuyi Fish Crisps, etc. ; The intriguing iron egg is braised repeatedly, and finally the egg white shrinks into a thin black bast, with a mellow smell. Grandma's iron egg has a history of more than 30 years and is one of the most famous snacks in Tamsui Old Street.