A plum tomato is a type of tomato known for its oval shape and thicker flesh. It is often used in cooking due to its low moisture content, making it ideal for sauces, pastes, and canning. The firm texture allows for easy slicing and dicing, which is why they are popular in various recipes. These tomatoes are typically less sweet than other varieties, such as cherry tomatoes, and have a more robust flavor. Commonly found in grocery stores, plum tomatoes can be enjoyed fresh in salads or cooked in dishes like marinara sauce and ratatouille.