Köfte yaparken soğanı küçük küçük doğradım; kardeşim sucuk yerine köfte istedi.

Yaparken comes from the verb yapmak (to make / to do) plus -ken, which means while.

So:

• yapmak = to make
• yapar-ken = while making / while doing

In this sentence, köfte yaparken means while making meatballs.

This -ken form is very common in Turkish for actions happening at the same time:

• yemek yerken = while eating
• yürürken = while walking
• çalışırken = while studying / working

Here köfte is being used in a general activity sense: while making meatballs. Turkish often leaves the object unmarked in this kind of broad, non-specific expression.

Compare:

• köfte yaparken = while making meatballs / while making some meatballs
• köfteyi yaparken = while making the meatballs

The version with -yi would sound more specific, as if both speaker and listener already know which meatballs are being referred to.

The -ı here is the accusative case, which often marks a specific direct object.

• soğan = onion
• soğanı = the onion / a specific onion as the object

So soğanı doğradım means I chopped the onion (a particular onion).

This is a very common thing in Turkish:

• Kitap okudum = I read a book / I did some book-reading
• Kitabı okudum = I read the book

In your sentence, the onion is treated as a specific item being chopped, so soğanı is natural.

This repetition is a common Turkish way of expressing manner, often with a nuance like in small pieces, bit by bit, or nicely and finely.

So:

• küçük = small
• küçük küçük doğramak = to chop into small pieces / to chop finely

This kind of repetition is very natural in Turkish. It often adds a descriptive, adverb-like feeling.

Similar patterns:

• yavaş yavaş = slowly, little by little
• teker teker = one by one
• ufak ufak = in little pieces / gradually

So soğanı küçük küçük doğradım means something like I chopped the onion into small pieces.

Doğramak usually means to chop, especially food, into pieces.
Kesmek means to cut in a broader sense.

So:

• soğanı kestim = I cut the onion
• soğanı doğradım = I chopped the onion

Because onions for cooking are usually chopped into pieces, doğradım is the more natural verb here.

Also, doğradım is in the past tense:

• doğra- = chop
• -dı- = past tense
• -m = I

So it means I chopped.

Kardeş means sibling or brother/sister.
The ending -im means my.

So:

• kardeş = sibling
• kardeşim = my sibling

Turkish does not need separate basic words for brother and sister in every context. Kardeş can refer to either, unless the speaker makes it more specific:

• erkek kardeş = brother
• kız kardeş = sister

So kardeşim here simply means my sibling.

Yerine means instead of or in place of.

So:

• sucuk yerine = instead of sucuk

This structure is very common:

• çay yerine kahve = coffee instead of tea
• araba yerine otobüs = the bus instead of the car
• et yerine tavuk = chicken instead of meat

In your sentence, kardeşim sucuk yerine köfte istedi means that the sibling wanted köfte instead of sucuk.

This is a very common question. In Turkish, an unmarked object often has an indefinite or non-specific sense.

So:

• köfte istedi = wanted meatballs / asked for meatballs
• köfteyi istedi = wanted the meatballs / asked for the specific meatballs

In this sentence, the meaning is probably general: the sibling preferred köfte as the food choice, rather than asking for one already identified plate of meatballs. That is why köfte without the accusative sounds natural.

It can feel like either one in English, depending on context.

The verb istemek basically means to want, but when the object is food, drink, or an item, English often translates it more naturally as to ask for or to order.

So:

• köfte istedi could mean:
  • wanted meatballs
  • asked for meatballs

In this sentence, both ideas are close. The sibling expressed a preference for köfte rather than sucuk.

Yes, Turkish word order is flexible, but the given order is very natural.

The sentence is:

• Köfte yaparken soğanı küçük küçük doğradım; kardeşim sucuk yerine köfte istedi.

A rough structure is:

• [While making meatballs] [the onion] [in small pieces] [I chopped]
• [My sibling] [instead of sucuk] [meatballs] [wanted/asked for]

Turkish often puts the verb at the end, and information before the verb can be arranged to show emphasis.

For example, you could also say:

• Köfte yaparken küçük küçük soğanı doğradım.
• Kardeşim köfteyi sucuk yerine istedi.

But these may shift emphasis or sound slightly less neutral depending on context. The original sentence is very natural and balanced.

Yes, it could absolutely be written as two sentences.

The semicolon links two closely related ideas:

1. while making köfte, the speaker chopped the onion
2. the sibling wanted köfte instead of sucuk

Because the ideas are connected, the semicolon works well stylistically. But Turkish could also write:

• Köfte yaparken soğanı küçük küçük doğradım. Kardeşim sucuk yerine köfte istedi.

That would also be perfectly correct.

Grammatically, it mainly modifies doğradım:

• Köfte yaparken ... doğradım = While making meatballs, I chopped...

So the simultaneous action is between:

• making köfte
• chopping the onion

It does not naturally describe the sibling’s action in the second clause. The semicolon helps separate the two clauses, so köfte yaparken belongs to the first part.

Yes. Literally it means I chopped it into small pieces, but it can also carry the natural cooking sense of finely chopped.

In food-related Turkish, repeated adjectives like this often sound very idiomatic and practical, not overly poetic. So a learner should understand küçük küçük doğramak as a normal kitchen expression.

Depending on context, English might translate it as:

• I chopped the onion into small pieces
• I finely chopped the onion

Both are good ways to understand it.

Both are in the simple past tense in Turkish.

• doğradım = I chopped
• istedi = he/she wanted, asked for

This tense is formed with -dı / -di / -du / -dü (with vowel harmony and consonant changes).

Examples here:

• doğra-dı-m

  • doğra- = chop
  • -dı- = past
  • -m = I

• iste-di

  • iste- = want
  • -di = past
  • third person singular has no extra ending here

Turkish uses this tense very naturally for completed events in narration, just like English simple past.