Babaanne gelinceye kadar börek soğumasın diye fırında tutuyorum.

Babaanne specifically means paternal grandmother — your father’s mother.

Turkish distinguishes:

• babaanne = father’s mother
• anneanne = mother’s mother

In natural English, both may simply be translated as grandma if the family distinction is not important.

Also, the capital B here is only because it starts the sentence, not because it is necessarily a proper name.

Babaannem means my paternal grandmother.

But Turkish often uses kinship words without a possessive suffix when the relationship is already clear from context. So babaanne can mean something like grandma in a family-context sentence.

Compare:

• Babaannem geldi. = My grandmother came.
• Babaanne gelince... = When grandma comes...

Both are possible; the version without -m can sound more conversational or context-based.

Gelinceye kadar means until she comes or until grandma comes.

It breaks down like this:

• gel- = come
• -ince = when / once
• -ye = dative ending
• kadar = until / up to

So the whole expression means something like up to the point of her coming.

The y is a buffer consonant.

The form gelince ends in a vowel, and the dative ending also begins with a vowel. Turkish usually inserts y between two vowels to make pronunciation easier:

• gelince + e → gelinceye

This is very common in Turkish.

Yes. Gelene kadar is also completely natural and very common.

Both mean until she comes:

• babaanne gelene kadar
• babaanne gelinceye kadar

The difference is small. In many contexts they are interchangeable. Gelene kadar is often a bit more common in everyday speech, while gelinceye kadar can sound slightly fuller or more deliberate.

Literally, it is something like:

• soğumasın = let it not get cold / may it not cool down
• diye = here, so that / in order that

So börek soğumasın diye means: so that the börek doesn’t get cold

Even though soğumasın looks like a kind of command or wish form, in this structure it expresses purpose, not an actual command to the börek.

Because the sentence is expressing a purpose:

I’m keeping it in the oven so that it won’t get cold.

For this kind of meaning, Turkish often uses:

• verb + -masın diye
• or verb + -maması için

So:

• soğumasın diye = so that it doesn’t get cold

If you said soğumuyor, that would just mean it isn’t getting cold, which describes a fact, not the purpose of your action.

Yes. That is a very common alternative.

• börek soğumasın diye
• böreğin soğumaması için

Both mean roughly so that the börek doesn’t get cold.

A rough difference:

• ... soğumasın diye = often feels a bit more conversational and direct
• ... soğumaması için = often feels a bit more neutral or formal

Both are correct.

This is a very good question, because the sentence is slightly compressed.

In this sentence, börek is the subject of soğumasın:

• börek soğumasın = the börek shouldn’t get cold

It is not directly marked as the object of tutuyorum in the surface wording.

The object of tutuyorum is understood from context and left unstated. In more explicit Turkish, you could say:

• Böreği, babaanne gelinceye kadar soğumasın diye fırında tutuyorum.

That makes the object relationship clearer.

So the short version works because Turkish often omits repeated information when it is obvious.

Fırında tutuyorum means I’m keeping it in the oven.

Breakdown:

• fırın = oven
• fırında = in the oven
• tutuyorum = I am keeping / holding / leaving

Here tutmak does not mean physically holding something in your hands. It means to keep something somewhere.

Examples:

• Arabayı garajda tutuyoruz. = We keep the car in the garage.
• Yemeği sıcak tutuyorum. = I’m keeping the food warm.

Because fırında shows location: the börek is in the oven.

• fırında = in the oven
• fırına = to the oven / into the oven

So:

• Fırına koyuyorum. = I’m putting it into the oven.
• Fırında tutuyorum. = I’m keeping it in the oven.

The sentence is about where it stays, not about moving it there.

There are three different actions/ideas:

• Babaanne gelinceye kadar
  Subject: babaanne
  Meaning: until grandma comes

• börek soğumasın diye
  Subject: börek
  Meaning: so that the börek doesn’t get cold

• fırında tutuyorum
  Subject: understood I
  Meaning: I’m keeping it in the oven

Turkish often leaves subjects unstated when the verb ending already shows them.
Here -yorum in tutuyorum already tells you the subject is I.

Because Turkish usually puts subordinate information before the main verb.

A very literal order would be:

• Until grandma comes
• so that the börek doesn’t get cold
• I am keeping it in the oven

That sounds unusual in English, but it is very normal in Turkish. Turkish often builds up the context first and gives the main action at the end.

A fairly literal translation is:

Until grandma comes, so that the börek doesn’t get cold, I’m keeping it in the oven.

More natural English would usually be:

I’m keeping the börek in the oven so it doesn’t get cold until grandma arrives.

The Turkish sentence is structured differently, but the idea is the same.