A Boston restaurateur suing Donald Trump over an unfinished Fort Lauderdale beachfront tower testified Tuesday, often arguing bitterly.

John Taglieri, owner of the popular Giacomo’s Ristorante in Boston’s historic North End, recounted to jurors the troubled history of his involvement in the Trump International Hotel & Tower. He is one of two businessmen seeking to recoup construction fund deposits from a project that halted in 2009.