Kayo's Homemade Ketchup Recipe

Continue to simmer the mixture for an additional 2 hours and 15 minutes, stirring occasionally. This long simmer reduces the liquid and concentrates the flavors.

If you have a splatter screen, it's a good idea to use it during this stage to keep your stovetop clean, as the thick mixture can bubble and spit.

Carefully transfer the contents of the pot to a blender. It's often best to do this in batches, as hot liquids expand and can splash upwards.

Cover the blender with its lid, but leave the center cap open to allow steam to escape. Drape a kitchen towel loosely over the opening to prevent splatters.