The San Marzano is considered to be the best flavored tomato for whole canning and sauce making. 
 
Plants are large and of good disease resistance. Vibrant red fruits are plum-shaped and born in clusters, with thin skin and very meaty flesh. Whole fruits - which are meaty and dense - peel easily and cook down quickly, which is a nice bonus to their sutble sweet flavor.

HISTORY: Italian heirloom.