Handcrafted Portuguese Burger without Buns at Cafe de Rio - Craft Burger

First experience with Portuguese burgers, this handcrafted burger joint located near the Lisbon Museum, Cafe de Rio - Craft Burger, offers gluten-free burgers. The most distinctive feature is that the burgers don't have buns, resembling more of a vegetable sandwich with a burger patty, topped with a sunny-side-up egg. The side dish is thick-cut, skin-on fries, making for a very casual and natural eating experience, which is quite unique. Cafe de Rio also has something special, which is the red and green dipping sauces. The red one is tomato sauce, and the green one is mayonnaise. The flavors are slightly sweet, slightly sour, and slightly creamy, a novel and unique taste that I've never experienced before, and it helps to cut through the greasiness of the burger patty. Cafe de Rio's handcrafted burgers are very popular. Besides being gluten-free, they also offer vegetarian burgers. The interior decor is quite modern, and the staff is friendly and chatty. If you have the chance to travel to Lisbon, you should try this unique Portuguese burger.