Süt taşmadan önce ocağı kapat.

It is made of three parts:

• taşmak = to overflow / to boil over
• taşmadan = without overflowing or before overflowing in this kind of context
• önce = before

So:

• taşmadan önce = before it overflows / before it boils over

The ending -madan / -meden is a common Turkish way to say without doing X. When followed by önce, it often gives the sense of before X happens.

So this part is very natural Turkish for before the milk boils over.

Because Turkish often leaves out subjects when they are understood from context.

In English, you usually say:

• before it boils over

In Turkish, the it is not necessary here, because the thing that might boil over is clearly süt (milk). So Turkish simply says:

• Süt taşmadan önce = before the milk boils over

This kind of omission is very common in Turkish.

Because ocağı is the definite direct object form of ocak.

• ocak = stove / cooker / burner / hearth
• ocağı = the stove / the burner (as the object of the verb)

The verb kapatmak (to turn off / to close / to shut) takes a direct object here, and that object is specific: the stove. So Turkish uses the accusative ending.

What happens step by step:

• base word: ocak
• accusative ending: -ı
• when a word ending in k takes a vowel-starting ending, the k often softens to ğ

So:

• ocak + ı → ocağı

That is why you see ocağı kapat.

It can depend on context.

Ocak can refer to:

• the stove/cooker as a whole
• a burner on the stove
• sometimes, more loosely, the heat source

In Süt taşmadan önce ocağı kapat, the natural meaning is:

• Turn off the stove / burner before the milk boils over

In everyday English, a learner might translate it as either:

• Turn off the stove
• Turn off the burner
• Turn off the heat

All of those can fit depending on the situation.

Kapat is the imperative form of kapatmak (to close / to shut / to turn off) for you singular, in an informal or neutral command.

So:

• kapat = turn it off / shut it / close it

This is the form you would use when speaking directly to one person casually.

Related forms:

• kapatın = turn it off (plural or polite)
• kapatmayın = don’t turn it off (plural or polite)
• kapatma = don’t turn it off (singular informal)

So this sentence is addressing one person directly:

• Süt taşmadan önce ocağı kapat.

Because Turkish normally places the main verb at the end of the sentence.

A very common Turkish pattern is:

• time expression / condition / object + verb

Here:

• Süt taşmadan önce = before the milk boils over
• ocağı = the stove / burner
• kapat = turn off

So the structure is very natural Turkish:

• Before the milk boils over, turn off the stove.

English is more flexible, but Turkish strongly prefers the verb at the end in a sentence like this.

Turkish does not have articles like a/an and the.

So süt can mean:

• milk
• the milk

The exact meaning comes from context.

In this sentence, English naturally says the milk, because we are talking about a specific milk that is heating up. But Turkish simply says süt.

This is completely normal:

• Süt taşmadan önce... = Before the milk boils over...

Yes, very often.

Taşmak basically means to overflow or to spill over. It can be used for:

• milk boiling over
• a pot overflowing
• water overflowing
• even figuratively, like emotions overflowing

In this sentence, with süt, the intended meaning is clearly:

• to boil over

So although the core meaning is overflow, the best English translation here is usually boil over.

You might hear forms like that in some contexts, but taşmadan önce is clearer and more standard for before it boils over.

Compare:

• taşmadan önce = before it overflows
• taşmadan = without overflowing / before overflowing, depending on context

Using önce makes the time relationship explicit and sounds very natural here. So for a learner, Süt taşmadan önce ocağı kapat is the safest and best version to remember.

It is informal/neutral, because of kapat.

You would say this to:

• a friend
• a family member
• a child
• someone you are speaking to casually

If you wanted a more polite or plural version, you would say:

• Süt taşmadan önce ocağı kapatın.

So the difference is mainly in the command form:

• kapat = singular informal
• kapatın = polite or plural

A helpful breakdown is:

• Süt = milk
• taşmadan önce = before overflowing / before it boils over
• ocağı = the stove / burner
• kapat = turn off

So very literally:

• Milk boil-over-not before the-stove turn-off

That sounds unnatural in English, of course, but it shows how Turkish builds the meaning.

Natural English:

• Turn off the stove before the milk boils over.