San Marzano tomatoes are thinner and more pointed.
The flesh is much thicker with fewer seeds, and the taste is stronger, sweeter, and less acidicSan Marzano tomatoes, along with Pomodorino del Piennolo del Vesuvio, have been designated as the only tomatoes that can be used for Vera Pizza Napoletana (True Neapolitan Pizza).
San Marzano tomatoes originate from the small town of San Marzano sul Sarno, near Naples, Italy, and were first grown in volcanic soil in the shadow of Mount Vesuvius. One story goes that the first seed of this tomato came to Campania in 1770 from Central America.