Learn Swedish: Det står en meny på disken. - There is a menu standing on the counter.

In Swedish, to say "there is" something in a specific location, we often use a verb that describes how the object is positioned: står (stands), ligger (lies), or sitter (sits). Because a menu is usually upright in a holder on a counter, we use står. This is much more natural in Swedish than just saying Det finns.

Why does it start with Det? Doesn't Det mean "It"?

Det usually means "It", but here it works like the English word "There" in "There is...". Swedish uses Det as a placeholder to introduce that something new exists in a place. You cannot use Där (which means "over there") for this kind of sentence.

Why is the real subject (en meny) placed after the verb?

Because Swedish strictly follows the V2 rule (the verb must be the second piece of information in a main clause). Since the placeholder Det takes the first spot, the verb står comes second, pushing the actual subject (en meny) to the third spot.

I know disk from washing dishes. Does it mean something else here?

Yes, the noun en disk can mean the dirty dishes, but it also commonly means a counter, a desk (like a reception or checkout desk), or a bar. In this sentence, på disken translates to "on the counter".