As an aspiring actor who cooked as a hobby, Lomonaco said that meeting Patrick Clark inspired him to become a chef.

He revitalized the restaurant, known for its storied history as a Prohibition-era speakeasy, by revamping the menu by eliminating some older continental standbys in favor of updated American fare.

[2][4] Lomonaco was uninjured during the September 11 attacks as he was in the concourse of the World Trade Center having a pair of eyeglasses repaired at LensCrafters.

[6] After the September 11 attacks, Lomonaco became a consulting chef to Noche, a multi-story restaurant and nightclub in midtown Manhattan highlighting the cuisines of Latin America and the Caribbean.

In 2006, Lomonaco opened Porter House New York, an American grill in the newer Time Warner Center on the Columbus Circle.

[8] The 250-seat restaurant with a view of Central Park South had garnered positive reviews for its contemporary American menu.

He also participates in cooking events that benefit causes including the March of Dimes, City Harvest and Share Our Strength.