To make ketchup at home with only six ingredients in less than 30 minutes, mix chopped tomatoes, light brown sugar, apple cider vinegar, salt, paprika and Worcestershire sauce in a pot, bring to a boil, and then simmer for 10 minutes. Cool, and then blend in a blender or food processor before serving.
To make a quick homemade ketchup, mix 1 cup of chopped tomatoes, 2 teaspoons each of light brown sugar and apple cider vinegar, 1 teaspoon each of paprika and Worcestershire sauce, and 1 1/2 teaspoons of salt in a pot. Bring to a boil, stirring occasionally, and then reduce to medium for 10 minutes. Allow the mixture to cool for five minutes, then blend in a blender or food processor until smooth.
Alternatively, use tomato paste instead of fresh tomatoes, and add spices, molasses and corn syrup for a sweeter variation. In a saucepan, mix 1 can of tomato paste, 2 tablespoons of white vinegar, 5 tablespoons of brown sugar, 1 teaspoon of molasses and 1 tablespoon of corn syrup. Season with 1/4 teaspoon of allspice, 1 teaspoon of salt and 1 teaspoon each of garlic and onion powder. Add 1 1/4 cup of water, and simmer for 45 minutes to one hour.