The San Marzano tomato was almost extinct a few years ago, but today it is one of the most important tomato varieties in the world. Its official name is Pomodoro San Marzano dell’Agro Sarnese Nocerino DOP, and it is named after the town of San Marzano sul Sarno in the Italian region of Campania, where the variety originates. The elongated, cylindrical fruit with a small tail is one of the plum tomatoes. It is not easily transported, but is resistant to many tomato diseases. The fruit ripens throughout the summer and into the autumn. It has a firm flesh and is mainly processed into tomato paste and canned food. It is considered to be tasty, but in my experience it can by no means compete with many other varieties.
Like all tomato cultivars, this is edible raw and cooked. Tomatoes are one of the most widely used fruits in the world, especially in stews, as cold (ketchup) and hot sauces, and are even used sometimes in jam, as juice (e.g. sangrita) and in cocktails (Bloody Mary). As tomato paste they are used as thickeners and seasonings. Especially their content of lycopene (only in red tomatoes) and many other vitamins makes them valuable food plants.