Frida's Blue House is located in Coyoacn, south of the beautiful city of Mexico. After a visit to the Blue House, walk 700m to reach the central square of Coyoacan. The food market of coyoacan is famous for its inexpensive food. Looking far away is a row of yellow houses, and there are surprises in it. In front of the food stalls, full of diners. I was seated in front of a stall to eat tostadas. Tostadas is a very common street food in Mexico. Spread the buttery tortillas on a crispy tortilla, topped with seafood, meat, vegetables, etc., then sprinkle with onions, cheese and avocado. Although it is impossible to communicate with the stall owner, the food is in front of you, telling the stall owner what to add by finger. Seafood 40 pesos, vegetables 30 pesos, double fight 45 pesos, a super cup of juice 40 pesos. It is highly recommended that the tomatoes are mixed with fresh shrimp and the most delicious ones have been tried. One is oversized, I have eaten two servings, and the locals can usually eat three.