Nah, its because you need to scrape down the sides to get all the soup at the end and if its a square container you can't do that in the corners. Round containers are just easier to scrape down.

For those that need an explanation: round containers don't have corners, but square ones do. Soup is a liquid, which means it will occupy the corner. The corners are very difficult to get liquid out of; be it with a spoon or otherwise for eating, cleaning, serving, etc.. Putting soup in round containers keeps that problem from occurring.

In zero G it is indeed a sphere

The better version of this joke

Because of bowls, I get it

I disagree hard. The shape of soup is temperature based.

Or perhaps because it's easier to scrape down the sides of a rounded container with a spoon?...

Assuming no gravity, soup is a sphere.

It's very hard to get all of the soup out of a square container, because a spoon won't reach into the edges properly

This year’s award winning film: The Shape of Soup.

Soup cans > soup cubes

I was wondering why they make them in cans rather than cubes since it’s space lost and found this:

The cylindrical shapes of cans are a major benefit when manufacturing products. The cylindrical shape is the perfect cross-section of using the least amount of material but being able to fit the most product into shipment boxes and on store shelves. A spherical shape is inefficient for packaging, and a cubical shape is inefficient in terms of material use. The cylindrical shape is just right by using a rounded top (like a sphere) and elongated sides (like a cube). This cylindrical shape is also critical for withstanding pressure. This shape can withstand up to 90 lbs of pressure, making them a durable product for day-to-day life.

https://www.tastingtable.com/1369064/scientific-reason-canned-goods-always-cylindrical/

yeah, ok. tend to agree. although i will allow a Squircle

Because you can't explain. Because your brain is in a round container and it has personal biases in shape preferences.

Bouba shaped soup

I wish bouillon cubes were spheres

I completely understand, I see nothing wrong with this statement.

well rounded logic

I don't even possess a round container. They're strictly less practical than rectangular ones

I agree. A liquid should have the freedom to expand in all directions equally.

Everything else is just needless abusive or cruel behavior towards soup.

Campbell's BuzzBallz

I prefer square because it's easier to fold the soup.

"How to fold soup" Steve Martin, Cruel Shoes.

Never trust soup from a tetrapack

Of course not - no explanation is necessary!!

Soup is round Soup cans are Soup cubes We must resolve this tension Soup cobes

Here some soups are sold in Tertrapak cartons which I suspect would break the average American.