tomato

Appropriate amount of rock sugar

Homemade ketchup?

Cut the tomatoes into pieces and mash them with a blender.

Add sugar and bring to a boil.

Keep stirring, the thicker it is, the easier it is to splash.

Boil to the fork, then turn off the heat. Let it cool.

Tomato paste can be stored at room temperature for several months. If the bottle cap of ketchup bulges and smells after opening, it may be a sign of deterioration. Stop eating.