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What's the Difference Between Ketchup and Catsup?

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Ketchup and catsup are simply two different spellings for the same thing, a modern, Westernized version of a condiment that European traders were introduced to while visiting the Far East in the late 17th century. What exactly that condiment was and where they found it is a matter of debate.

It could have been ke-chiap from China's southern coastal Fujian region or it could have been kicap (a Malay word borrowed from the Cantonese dialect of Chinese, also spelled kecapand ketjap) from Indonesia, both of which are sauces based on brined or pickled fish or shellfish, herbs and spices. Whatever it was, the Europeans liked it, and as early 1690, they brought it back home with them, calling it catchup.

The early Western versions of the sauce - which, starting in 1711, was sometimes called ketchup, another Anglicization of the Malay name popularized in the book An Account of Trade in India - were pretty faithful to the original Eastern ones, with one of the earliest recipes published in England (1727) calling for anchovies, shallots, vinegar, white wine, cloves, ginger, mace, nutmeg, pepper and lemon peel. It wasn't until almost a century later that tomatoes found their way into the sauce, in a recipe in an American cook book published in 1801. In the meantime, another alternative spelling popped up, mentioned in a 1730 Jonathan Swift poem: "And, for our home-bred British cheer, Botargo [a fish roe-based relish], catsup, and caveer [caviar]."

The tomato-based version of ketchup quickly caught on in the U.S. during the first few decades of the 19th century. At first, it was made and locally sold by farmers, but by 1837 at least one company was producing and distributing it on a national scale. The H. J. Heinz Company, a name that's synonymous with ketchup for most people today, was a relative latecomer to the game and didn't produce a tomato-based ketchup until 1876. They originally referred to their product as catsup, but switched to ketchup in the 1880s to stand out. Eventually, ketchup became the standard spelling in the industry and among consumers, though you can still find catsup strongholds sprinkled across the U.S.

Thanks to @SpaceJamb for suggesting the Mr. Burns photo.

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Big Questions
How Does Autopilot Work on an Airplane?
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How does autopilot work on an airplane?

Joe Shelton:

David Micklewhyte’s answer is a good one. There are essentially a few types of features that different autopilots have. Some autopilots only have some of these features, while the more powerful autopilots do it all.

  • Heading Hold: There’s a small indicator that the pilot can set on the desired heading and the airplane will fly that heading. This feature doesn’t take the need for wind correction to desired routing into account; that’s left to the pilot.
  • Heading and Navigation: In addition to holding a heading, this version will take an electronic navigation input (e.g. GPS or VOR) and will follow (fly) that navigation reference. It’s sort of like an automated car in that it follows the navigator’s input and the pilot monitors.
  • Altitude Hold: Again, in addition to the above, a desired altitude can be set and the aircraft will fly at that altitude. Some autopilots have the capability for the pilot to select a desired altitude and a climb or descent rate and the aircraft will automatically climb or descend to that altitude and then hold the altitude.
  • Instrument Approaches: Autopilots with this capability will fly preprogrammed instrument approaches to the point where the pilot either takes control and lands or has the autopilot execute a missed approach.

The autopilot is a powerful computer that takes input from either the pilot or a navigation device and essentially does what it is told to do. GPS navigators, for example, can have a full flight plan entered from departure to destination, and the autopilot will follow the navigator’s guidance.

These are the majority of the controls on the autopilot installed in my airplane:

HDG Knob = Heading knob (Used to set the desired heading)

AP = Autopilot (Pressing this turns the autopilot on)

FD = Flight Director (A form of navigational display that the pilot uses)

HDG = Heading (Tells the autopilot to fly the heading set by the Heading Knob)

NAV = Tells the autopilot to follow the input from the selected navigator

APR = Tells the autopilot to fly the chosen approach

ALT = Tells the autopilot to manage the altitude, controlled by the following:

VS = Vertical Speed (Tells the autopilot to climb or descend at the chosen rate)

Nose UP / Nose DN = Sets the climb/descent rate in feet per minute

FLC = Flight Level Change (An easy manual way to set the autopilot)

ALT Knob = Used to enter the desired altitude

This post originally appeared on Quora. Click here to view.

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Big Questions
What's the Difference Between Vanilla and French Vanilla Ice Cream?
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While you’re browsing the ice cream aisle, you may find yourself wondering, “What’s so French about French vanilla?” The name may sound a little fancier than just plain ol’ “vanilla,” but it has nothing to do with the origin of the vanilla itself. (Vanilla is a tropical plant that grows near the equator.)

The difference comes down to eggs, as The Kitchn explains. You may have already noticed that French vanilla ice cream tends to have a slightly yellow coloring, while plain vanilla ice cream is more white. That’s because the base of French vanilla ice cream has egg yolks added to it.

The eggs give French vanilla ice cream both a smoother consistency and that subtle yellow color. The taste is a little richer and a little more complex than a regular vanilla, which is made with just milk and cream and is sometimes called “Philadelphia-style vanilla” ice cream.

In an interview with NPR’s All Things Considered in 2010—when Baskin-Robbins decided to eliminate French Vanilla from its ice cream lineup—ice cream industry consultant Bruce Tharp noted that French vanilla ice cream may date back to at least colonial times, when Thomas Jefferson and George Washington both used ice cream recipes that included egg yolks.

Jefferson likely acquired his taste for ice cream during the time he spent in France, and served it to his White House guests several times. His family’s ice cream recipe—which calls for six egg yolks per quart of cream—seems to have originated with his French butler.

But everyone already knew to trust the French with their dairy products, right?

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