A tomato ketchup plant is a facility where tomatoes are processed and turned into ketchup. The process typically involves washing and sorting the tomatoes, then crushing and pureeing them to create a tomato paste. The tomato paste is then mixed with other ingredients such as vinegar, sugar, and spices to create the final product, which is then packaged and distributed to stores.

The process of creating ketchup can vary from plant to plant, but generally, the tomatoes are cooked and processed in large vats or tanks. The plant may also have equipment for sterilizing and filling the ketchup bottles or packaging.

Tomato ketchup plants can range in size from small, family-owned businesses to large, multinational corporations. Many of the major food companies have their own tomato ketchup plants, while others may contract with third-party manufacturers to produce their ketchup.