Ask any chef and they’ll tell you that San Marzanos are the best tomatoes for sauce.
The flesh of San Marzanos is thicker and meatier than other sauce tomatoes, they have fewer seeds, a bolder flavor, and they’re less acidic. The end result? These tomatoes just melt into sauces.
To prep San Marzanos for sauce, you first have to remove the skin. Fill a large pot with water and bring to a boil. Drop in a few San Marzanos (you may have to work in batches) and boil until they’re skins start to blister (about 1-3 minutes). Remove the tomatoes from the water using tongs, a slotted spoon, or a Chinese skimmer and immerse them in a bowl of ice water. Once the tomatoes are cool enough to handle, use your hands to peel off the skins.
Next, chop off the tops of the tomatoes and slice away any tough flesh, bruises, or rot spots. To remove the seeds, cut the tomato in half lengthwise and gently scrape out the seeds using a small spoon or your finger. At this point, the tomatoes are ready to be frozen or canned.
Look for fresh San Marzano tomatoes at your local farmers market. You can also find canned San Marzanos in specialty stores or larger grocery chains.