What is the equivalent of a plum tomato?

A plum tomato is a variety of tomato that is typically oval or Roma-shaped, with a firm texture and meaty flesh. Plum tomatoes are often used in cooking sauces and soups because of their concentrated flavor. Some common substitutes for plum tomatoes include:

- Roma tomatoes: These are a close relative of plum tomatoes and are often used in cooking. They have a similar shape and flavor to plum tomatoes, but may be a bit smaller.

- San Marzano tomatoes: These are a variety of plum tomato that is known for its sweet and flavorful taste. They are often used in Italian cooking.

- Beefsteak tomatoes: These are a large variety of tomato that has a meaty texture and a sweet flavor. They can be used in cooking or eaten fresh.

- Heirloom tomatoes: These are a variety of tomatoes that have been passed down from generation to generation. They can come in a variety of shapes, sizes, and colors, and have a variety of flavors.