Wash and chop ripe tomatoes
Cook tomatoes in a pot until soft
Mash the cooked tomatoes
Strain the mixture to remove skins and seeds
Return the tomato pulp to the pot
Add sugar, salt, vinegar, and spices
Cook on low heat until thickened
Stir frequently to prevent sticking
Taste and adjust seasoning if needed
Cool the ketchup completely
Pour into sterilized bottles or jars
Store in the refrigerator