“Restaurant: Impossible,” which began airing its 16th season on Dec. 26, highlights beleaguered eateries and tries to rescue them from financial danger with a complete makeover of the menu and the restaurant’s physical appearance. With help from restaurant staff and a battery of volunteers, Irvine has two days and a modest budget of $10,000 to revive each restaurant. The Taverna Trela episode is expected to air later this spring.