When Maricel Presilla was a child in Santiago de Cuba, her mom fed her pan and avocado, a dish that had been eaten in Latin American countries for centuries. But in 2015, avocado toast, as it has come to be known, gained popularity in the United States, gracing many brunch and appetizer menus. Avocado toast is an example of how Latin American food and culture have influenced American favorites like tacos, arroz con pollo, plantains, empanadas and skirt steak. “These are things that are very easy to duplicate and things that are not esoteric. They are not considered weird,” said Presilla, a cul…