"The great thing about Portland Mercado’s cluster of Latin American food carts is that diners can mix and match cuisines from all over Central and South America. But no visit is complete without Tierra del Sol’s tacos, all served on organic blue corn tortillas. Owner Amalia Sierra serves three of her deeply complex moles — a dark and robust coloradito, a vegetal pipian, and a bright and lively amarillo — in tacos, an ideal solution for those wanting to try all three. The cart also offers fillings like carnitas and chorizo." - Nathan Williams, Ron Scott