Öğle yemeği için mercimek çorbası yapacağım, nohut ise yarına kalacak.

These are both indefinite noun compounds, which are very common in Turkish.

• öğle yemeği = lunch
• mercimek çorbası = lentil soup

In this pattern:

• the first noun tells you what kind of thing it is
• the second noun takes a special ending that looks like the 3rd person possessive

So this is not really saying the soup of lentil or the meal of noon in a literal possessive sense. It is just the normal Turkish way to form compounds like these.

A few details:

• yemek
  • this ending becomes yemeği because final k often softens to ğ
• çorba
  • the ending becomes çorbası; the s is a buffer consonant after a vowel

This is the same kind of structure as:

• elma suyu = apple juice
• Türk kahvesi = Turkish coffee
• yaz tatili = summer vacation

Here, için means for.

So öğle yemeği için means for lunch or more literally for the lunch meal.

It shows purpose or intended use:

• Öğle yemeği için mercimek çorbası yapacağım. = I’ll make lentil soup for lunch.

This is slightly different from something like öğle yemeğinde, which would mean at lunch / during lunch rather than for lunch.

Yapacağım comes from the verb yapmak = to do / to make.

It breaks down like this:

• yap- = verb stem
• -acak / -ecek = future tense
• -ım / -im / -um / -üm = I ending

So:

• yap-acak-ım → yapacağım

The k changes to ğ before the vowel of the personal ending, which is a normal sound change in Turkish spelling.

So yapacağım means:

• I will make
• I’m going to make

This is about the accusative case.

In Turkish, a direct object often stays unmarked when it is non-specific or indefinite. That is what is happening here:

• mercimek çorbası yapacağım = I’ll make lentil soup / some lentil soup

If you say:

• mercimek çorbasını yapacağım

that usually sounds more like:

• I’ll make the lentil soup
• a specific lentil soup already known from context

So the version in your sentence is natural if the speaker is just saying what dish they plan to make, not referring to one specific previously identified soup.

It is built into the verb.

In Turkish, subject pronouns are often omitted because the verb ending already tells you the person:

• yapacağım = I will make

So Turkish does not need ben here.

You could say:

• Ben öğle yemeği için mercimek çorbası yapacağım...

but that would add emphasis to I. Without ben, the sentence sounds more neutral and natural.

Here ise marks contrast or a change of topic.

So nohut ise means something like:

• as for the chickpeas
• but the chickpeas
• whereas the chickpeas

In this sentence, it contrasts two plans:

• lentil soup will be made for lunch
• the chickpeas will be left for tomorrow

A very important point: although ise can sometimes be connected with if in other contexts, here it does not mean if. Here it is a contrastive/topic marker.

You could compare:

• Mercimek çorbası yapacağım, nohut ise yarına kalacak. = I’ll make lentil soup; as for the chickpeas, they’ll wait until tomorrow.

If you replaced ise with ama, the meaning would still be similar, but ise feels more like as for X / whereas X than a simple but.

Not necessarily. Turkish often uses a bare singular noun for foods, ingredients, and general substances where English may prefer a plural or mass-noun expression.

So nohut can naturally mean:

• chickpeas in general
• the chickpeas
• chickpea dish / chickpea ingredient, depending on context

In English, chickpeas is usually plural, but Turkish does not always match English number in the same way.

Using nohutlar would usually sound more like you are talking about specific individual chickpeas or clearly separate sets of them, which is not the most natural choice here.

Because this uses the expression yarına kalmak.

• yarın = tomorrow
• yarına = to/for tomorrow (dative case)

With kalmak, Turkish often uses the dative to show that something is left for a later time:

• yarına kalmak = to be left for tomorrow
• to be postponed until tomorrow
• to wait until tomorrow

So:

• nohut ise yarına kalacak = the chickpeas will be left for tomorrow

If you only said yarın, that would just mean tomorrow as an adverb, and it would not express the same idiomatic idea as clearly.

Kalacak is the future form of kalmak.

Kalmak can mean:

• to stay
• to remain
• to be left
• to be left over
• to be postponed

In this sentence, kalacak does not just mean physical staying. It means something more like:

• will be left for tomorrow
• will wait until tomorrow
• will be postponed until tomorrow

So the idea is that the speaker will make lentil soup now, but the chickpeas are not part of today’s plan.

Yes. The sentence is very natural.

A simple breakdown is:

• Öğle yemeği için = for lunch
• mercimek çorbası = lentil soup
• yapacağım = I will make
• nohut ise = as for the chickpeas / but the chickpeas
• yarına = for tomorrow
• kalacak = will remain / will be left

Turkish is fairly flexible with word order, but the verb usually comes near the end of its clause. Also, elements like time, purpose, and contrast are often placed earlier for clarity or emphasis.

So this structure is very typical:

• [purpose] [object] [verb], [contrasted topic] [time] [verb]

You could rearrange some parts, but the nuance would shift. The given order sounds smooth and neutral.