"Sülni", without a "t", is the reflexive(?) version. Or passive? Yes, maybe it is passive. The meat is not baking itself. The baking is happening to it. It is being baked (or fried). The "-t" you see on it is for the past tense.
There is not much of a passive voice in Hungarian, but there are other options of expressing it. One is these passive verbs. There are a few of these:
"Süt" / "sül"
"Főz" / "fő(l)"
"Dönt" / "dől"
"Készít" / "készül"
"Épít" / "épül"
"Szépít" / "szépül"
"Kékít" / "kékül"
Unfortunately, this is not a general pattern for all verbs. There are various ways for various verbs. Some of the above verbs originate from adjectives ("szép" > "szépít"/"szépül").
I guess the best bet is to just learn them as independent words, occasionally allowing yourself an "a-ha" moment.
So, "A szakácsaid sülnek a kertben" would mean that the cooks are being baked in the garden? I'm asking because in English, you could phrase both the idea that the cooks are baking something, or they are being baked, as "the cooks are baking." It sounds like Hungarian doesn't allow for that kind of misunderstanding.
And this just made me realize why "the car is parking in the garage" makes sense to a Hungarian speaker who isn't fluent in idiomatic English. The ambiguity doesn't happen in English for the car example because cars are inanimate and don't park themselves (yet!).
Yes on "sülnek". They themselves are in the oven.
But parking is different. A car can park, in Hungarian. It only makes sense. Let's just talk about cars with human drivers. Can such a car:
- wait at the red light?
- turn right?
- pass another car?
- yield to a pedestrian?
- crash into a wall?
Yes on all?
Yet it is (usually) all under the control of a driver.
Which is the same with parking.
So why can't we say that a car parks?
Well, in Hungarian we can.
It is logical.
Also, we can say that we (literally)
- "park (down) the car"
- "park (down) with the car"
- "park (in) with the car into the garage".