Expendio de Maiz Sin Nombre in Mexico City is a unique spot where the chef brings his rural kitchen to the city, serving up flavorful dishes based on heirloom corn. There's no menu - just tell them if you have any allergies or dietary restrictions (including vegan) and they'll whip up some tasty dishes. They'll keep serving you plate after plate until you say stop. It can run 600-800 pesos per person depending on your dietary preferences and the number of dishes you order. Cash only. There's also no reservations so plan accordingly as the wait can be long, even for just for 1-2 people. But 100% worth it to have a one-of-a-kind dining experience. Also, it is communal seating.