Computers and Electronics When did Formosa Cafe open? When did Formosa Cafe open? 1939 How old is Formosa Cafe? The Formosa Cafe is a restaurant and bar founded in 1925 and located at 7156 Santa Monica Boulevard at the intersection with North Formosa Avenue, in West Hollywood, California. The Formosa was founded in 1925 by 1920s prize-fighter Jimmy Bernstein.