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How It's Made

How It's Made : Tomato Ketchup

July 7, 2026


 Ketchup is made by cooking down ripe tomatoes into a thick paste and blending it with vinegar, sweeteners, salt, and spices. The mixture is heated to pasteurize the ingredients, homogenized for a perfectly smooth texture, and bottled while hot to ensure long-term shelf stability. 
tomato paste processing



Ketchup making process

The industrial manufacturing process follows a structured sequence: 

  • Selection & Washing: Ripe, red processing tomatoes are harvested, sorted for quality, and washed to remove dirt. 
selection and washing of the Tomatoes
  • Crushing & Pulping: The tomatoes are chopped and heated to break down their cell walls. This pulp is strained to remove skins, seeds, and fibrous material. 
  • Easy crushing of tomato at home
  • Concentration: The tomato juice is processed through vacuum evaporators, removing a significant portion of the water to form a rich tomato paste. 
Concentration process of removing water from crushed tomato
  • Mixing & Cooking: The tomato paste is placed into industrial mixing tanks and combined with water, sweeteners (like high-fructose corn syrup or cane sugar), vinegar, salt, and proprietary spice blends (such as onion and garlic powder). 
mixing chamber for adding constituent

Homogenization & Pasteurization: The mixture is pressurized in a homogenizer to ensure a smooth, stable emulsion. It is then pasteurized to eliminate bacteria and ensure a long shelf life. 

Bottling: The ketchup is de-aerated to remove trapped air (which prevents oxidation), and then immediately poured and sealed into sterilized glass, plastic, or pouch containers.

Schematic diagram of Tomato processing into paste

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