Chili tastes better outdoors—and when it’s served in a bag of Fritos!
Season the meat with salt and pepper. In a large pot, heat the oil over medium. Add the meat and cook, stirring often, until browned, about 8 minutes. Transfer to a bowl.
Set 1/2 cup of the onion aside for garnish. Add the remaining onion and the bell pepper to the pot; season. Cook, stirring often, until softened, about 5 minutes. Add the chopped chile, garlic, tomato paste and spices. Stir constantly, until fragrant, about 1 minute. Return the meat to the pot; add the beer. Cook, stirring and scraping the browned bits from the bottom of the pot, until the liquid is almost evaporated, about 5 minutes. Add the stock; bring to a boil. Reduce the heat; simmer, stirring often, until the meat is tender, 20 to 25 minutes.
Add the beans; cook, stirring often, until the flavors meld, about 15 minutes. Stir in the masa harina; cook until thick, about 2 minutes. Spoon the chili into the Fritos bags. Add the toppings and the sliced chile.