I just made this yesterday too and loved it. Quite a few tweaks from me, and I meant to do Chelsea's tweaks but totally forgot.
So it's borderline fructose friendly (concentrated tomato itself can be iffy) but in principle is fine. I left out the onion and used brown sugar instead of the honey. Smoked paprika instead of hot paprika, so a big pinch of cayenne pepper. I thought it was fab and even Master 3 ate it quite happily. NExt time would like to make it a bit runnier so will add the water + sugar combo Chelsea suggested. I think the flavour is awesome - far better than commercial ketchups I have tried.