Mix the tomato paste, sugar, water, vinegar, salt and the spices in a saucepan and bring to the boil. Be careful, it splashes easily! Simmer over a moderate heat for 5 - 10 minutes, stirring constantly, so that the spices can give off flavor.
If it is too firm for you, you can add a tablespoon of water until the desired consistency is reached. If you want, you can bind the ketchup a little. But that is not a must. The main purpose of this is to prevent any liquid from settling in the ketchup when it is stored for a long time.
To do this, mix 1 tablespoon flour with 2 - 3 tablespoon water and stir into the simmering ketchup drop by drop until it is perfectly creamy. Usually 1 - 2 teaspoons of this flour-water mixture are enough. Starch or sauce binders are sure to work too. Fill very hot and immediately close airtight. Keeps in the refrigerator for weeks.
This ketchup comes very close to the one bought in the store in taste and texture. It is also suitable as an emergency ketchup recipe when a replacement is needed quickly. Absolutely suitable for children.