Gather ripe tomatoes, onion, garlic, vinegar, sugar, salt, and spices
Wash and chop the tomatoes
Cook the tomatoes, onion, and garlic until soft
Blend or mash the mixture until smooth
Strain the mixture to remove skins and seeds
Return the strained mixture to the pot
Add vinegar, sugar, salt, and spices
Simmer until thickened
Stir occasionally to prevent sticking
Taste and adjust seasoning
Cool the catsup
Store in a clean, sealed container in the refrigerator