https://www.amazon.com/Baron-Banana-Ketchup-14-Ounce/dp/B0019BCQ56
See, I would think that, as a chef, you'd spend less time worrying about the accuracy of a crowd-sourced encyclopedia and more time thinking about innovative ways to use a variety of fruit ketchups you didn't know existed to create new and interesting dishes. I mean, I know that I have better things to do than debate ketchup with strangers on the internet.
Amazon. You might be able to find it cheaper elsewhere, but I already had this link handy. Baron is the only brand I've tried so far, but it's delicious.
If you have any Asian or Latin markets, you might be able to find it there. Probably also World Market if you've got one of those in your area.
Banana ketchup. It can be difficult to find in stores outside the Caribbean but it's great on semi-sweet things like sweet potato fries.
I had banana ketchup in St. Lucia. Apparently they produce so many bananas they have to find alternative uses for them. The company that sells it there is called Baron
Nobody I know believes me, but banana and ketchup actually make a pretty good combination. In fact, you can even buy bottles of banana ketchup.
I tried it a couple years before Obama asked for it on his burger. Actually it is a nice kick to a well-made burger. I'd not ask for it all the time but it works if I'm in the mood for it.
That said, replace tomato ketchup with Baron's banana ketchup and I will die happy. I keep a bottle in my pantry and an open on in my refrigerator. Tomato ketchup for fries, banana ketchup on my burger. If going to someone's cookout and it is BYOB and potluck for sides, I'm packing some Baron's too for my burger. Wife and I were introduced to it when we were down in St. Lucia for the first time and fell in love.
YMMV.