Siz gelirseniz, babaannem size de börek ve ayran ikram eder.

Siz is the you form used for:

• more than one person: you all
• polite/formal singular: you in a respectful way

So this sentence could mean either:

• speaking politely to one person, or
• speaking to several people

The verb ending in gelirseniz matches siz.

Gelirseniz means if you come.

It can be broken down like this:

• gel- = come
• -ir- = aorist/general-future marker
• -se- = conditional if
• -niz = you plural/formal

So:

• gelirseniz = if you come

This is a very common Turkish pattern for if-clause + personal ending.

Because the subject is siz, not sen.

Compare:

• sen gelirsen = if you come
• siz gelirseniz = if you come / if you all come

The personal ending has to agree with the pronoun.

In Turkish, the aorist form is very common in conditional sentences, especially when talking about something that will happen if a condition is met.

So:

• gelirseniz = if you come
• geliyorsanız = if you are coming / if it is the case that you are coming

In this sentence, gelirseniz sounds natural because it expresses a straightforward condition: If you come, ...

Babaannem means my paternal grandmother — specifically, my father’s mother.

It breaks down as:

• babaanne = paternal grandmother
• -m = my

So:

• babaanne = grandmother on the father’s side
• babaannem = my grandmother on the father’s side

This is different from:

• anneanne = maternal grandmother

Size is the dative form of siz.

• siz = you
• size = to you / for you

The verb phrase ikram etmek usually takes the person receiving something in the dative:

• size ikram eder = offers/serves to you

So the -e ending is there because the action is directed to you.

Here de means too / also / as well.

So:

• size de = to you too / to you as well

It suggests that the grandmother is not serving only others; you will get some too.

Important: this de is written separately because it is the additive particle too/also, not the locative ending -de.

İkram eder comes from the expression ikram etmek, which means:

• to offer
• to serve
• to treat someone to food/drink

In this sentence, babaannem is the subject, so:

• babaannem ... ikram eder = my grandmother offers/serves ...

The form eder is the 3rd person singular form, matching babaannem.

Because the verb agrees with the subject, not with the things being offered.

The subject is:

• babaannem = my grandmother

The things being offered are the objects:

• börek ve ayran = börek and ayran

So the verb is singular because my grandmother is one person:

• babaannem ... ikram eder

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

So bare nouns are very common:

• börek ve ayran = börek and ayran

Depending on context, English might translate this as:

• some börek and ayran
• börek and ayran
• the börek and ayran

Here it most naturally means something like some börek and ayran.

The sentence is:

• Siz gelirseniz, babaannem size de börek ve ayran ikram eder.

A natural way to understand the structure is:

• Siz gelirseniz = if you come
• babaannem = my grandmother
• size de = to you too
• börek ve ayran = börek and ayran
• ikram eder = offers/serves

Turkish often puts the verb at the end, and that is what happens here.

A conditional clause often comes first, but Turkish word order is fairly flexible for emphasis. This sentence, though, sounds very natural as written.

It could be omitted.

Turkish often drops subject pronouns because the verb ending already shows the person:

• Gelirseniz, babaannem size de börek ve ayran ikram eder.

This still means If you come, my grandmother will offer you too some börek and ayran.

Including siz can add emphasis, contrast, or clarity.

Literally, eder is in the aorist/simple present form, but in context it often has a future-like meaning.

So in this sentence:

• babaannem ... ikram eder

is naturally understood as:

• my grandmother will offer/serve ...

This is very common in Turkish: the aorist can express habitual actions, general truths, or future results in conditional sentences.