[cafard]

If you have an open weekend in the late summer, you can make your own ketchup. We did this a couple of summers just over twenty years ago. Then we bought an old house, and there were no open weekends.

[HeyLaughingBoy]

A weekend if you're fancy :-)

I found that tomato paste, sugar, vinegar and ground up pickling spice was good enough for me. And only took 15 minutes.

[huytersd]

What’s pickling spice?

[HeyLaughingBoy]

It's a spice mix that's used in pickling vegetables.

https://www.allrecipes.com/article/pickling-spice/