There are many Breakfast shop in Taiwan.
It is common that Taiwanese people eat at the breakfast shop.
Those store open from morning and close at noon. after noon, those store will be changed to other store, so If you want to eat, you need to go in the morning.
Speaking of Hamburguer, it is America, but I like Taiwan Hamburguer most.
Because very fresh and not too heavy taste Hamburguer.
They are very reasonable too. These are only 25NT$.
If you have chances, I recommend to eat them.
There is a breakfast chain store too.