There's a lot you don't know about that most popular of condiments, ketchup - its origin, its manufacture, and (as correspondent Luke Burbank finds out) why some people who spot a ketchup bottle see red.

Pittsburgh

Ketchup, widely regarded as a quintessential American condiment, actually traces its roots to Southeast Asia, where it began as a fermented fish sauce known as ketsiap. British colonists brought the sauce to Europe, and by the 19th century, Americans adapted it using abundant local tomatoes, resulting in the sweet and tangy version familiar today. 

The Heinz company, founded by Henry J. Heinz in Pittsburgh, played a significant role in popularizing tomato ketchup, developing a patented tomato variety specifically for the product. Despite its widespread appeal, regional preferences persist, with some places like Chicago famously rejecting ketchup as a topping for hot dogs.

Ketchup's sweet and sour history

Ketchup is just one of those American things, so common, so typical, so ubiquitous, that most of us never give it a second thought. It has everything that you could want. It's sweet and sour. It's got vinegar in it. It's got sugar in it. Andrew Smith is a food historian who says ketchup actually started out in what is now considered Indonesia, as a sort of fish sauce called ketsiap. British colonists brought it home, and then in the 19th century it landed here, in America, where there was an overabundance of tomatoes. If you had a ton of tomatoes in September or October, you had to do something with them, and one of the things that you could do with them is make ketchup. It took off immediately, due to its ability to add flavor to things, and we mean everything. During the Depression, people would go into small diners, and they would order a glass of water, and then they would pick up the ketchup, and they would add the ketchup, and they would have tomato juice at the end. It's not bad. Put a little vodka in there, a couple of olives. And the man maybe most responsible for ketchup's spread was a young German-American businessman in Pittsburgh named Henry J. Heinz. He started off selling horseradish, with some success, but it was his tomato ketchup that really took off. These days, Heinz Ketchup gets its start all the way across the country, in California, where their specially bred 4707 tomato is grown and harvested. They say it's perfect for making ketchup, much thicker and less juicy than your average grocery store tomato. The 4707 has actually been patented by Heinz, the result of years of research and development. And when those 4707s are picked, they become the responsibility of Hector Osorno, Tomato Ketchup Master, which really is his title. He's the guy that knows the secret recipe. Have they told you what's in the spices? Yes. So they trust you with that information? Yes. But you can't tell me? Osorno is one of only seven ketchup masters at Heinz. And sometimes what we do is just check. Charged with maintaining the taste, color and consistency of all 660 million bottles sold each year. Oh, wow. You gonna try it? Yeah. I'm gonna just do this. Oh, okay. It's good. It is. At one place, this ketchup mastery won't be necessary. Chicago. At least, not when it comes to hot dogs. No ketchup. No ketchup. Anything else but no ketchup. It's like sacrilegious. Fresh chopped onions. Step behind the counter at Portillo's. A kosher dill spiller. And you'll see that Chicago-style hot dogs aren't hurting for flavor. Is there a strategy to eating a Chicago-style dog? Some folks take the pickle off and eat the pickle on the side. Some folks just grab it and dig right in and eat it as it is. And don't even think about asking for ketchup across town at the legendarily saucy Wiener's Circle. Can I have ketchup on there? Heck, no. We don't think that's against the rules of the Wiener's Circle. We don't do ketchup on hot dogs, okay? Not in Chicago either. No. Turns out, she was not kidding. Thank you. Thank you. Now go sit down and have it. Okay. Eat it up. No f***ing ketchup, man! Well, we had to try. I guess that just means more ketchup for us non-Chicagoans.

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