Ne kuham špinat zato što je moderan, nego zato što ga djeca stvarno vole.

This is a very common Croatian pattern for correcting or contrasting an idea:

• ne X, nego Y = not X, but rather Y

So:

• Ne kuham špinat zato što je moderan, nego zato što ga djeca stvarno vole.
• I don’t cook spinach because it’s fashionable, but because the children really like it.

Here, the speaker rejects one reason and replaces it with the real one.

A useful thing to notice:

• nego is typically used after a negation
• it often means but rather rather than just plain but

Because the sentence contrasts two reasons:

• zato što je moderan = because it is fashionable
• zato što ga djeca stvarno vole = because the children really like it

Croatian often repeats the full structure in this kind of contrast for clarity and balance:

• not because..., but because...

So repeating zato što sounds natural and helps the listener clearly hear the two competing explanations.

Zato što means because.

In many cases, it is close in meaning to jer, which also means because. But zato što is especially common in patterns like this one:

• Ne ..., zato što..., nego zato što...

It sounds very natural when giving and contrasting reasons.
So while jer can also introduce a reason, zato što fits this sentence very neatly.

Because Croatian normally negates a present-tense verb by putting ne directly in front of it:

• kuham = I cook / I am cooking
• ne kuham = I do not cook / I am not cooking

You do not use nisam here, because nisam is the negative form of sam and is used with past-tense forms, not with a simple present-tense verb.

So:

• Ne kuham = correct
• Nisam kuham = incorrect

In Croatian, the present tense is often used for habitual or general statements, just like in English:

• I cook spinach because...
• Kuham špinat zato što...

So kuham here does not have to mean only I am cooking right now. It can also mean:

• I cook spinach
• I make spinach
• I prepare spinach

The sentence is about the speaker’s general motivation, so the present tense works perfectly.

Croatian has no articles, so there is no separate word for a/an/the.

That means špinat can mean:

• spinach
• the spinach

The exact meaning depends on context. In this sentence, English naturally says spinach in a general sense, so that is how we understand it.

It is the direct object of kuham, so it is in the accusative case.

However, špinat is a masculine inanimate noun, and for many masculine inanimate nouns, the accusative singular looks the same as the nominative singular.

So:

• nominative: špinat
• accusative: špinat

That is why the form does not change even though it is the object.

Because moderan agrees with špinat.

• špinat is a masculine singular noun
• so the adjective must also be masculine singular

That gives:

• špinat je moderan = spinach is fashionable / trendy

If the noun were feminine, the adjective would change:

• juha je moderna = the soup is fashionable

If it were neuter:

• jelo je moderno = the dish is fashionable

Ga refers back to špinat.

It is the short unstressed form of the masculine singular accusative pronoun, meaning him/it. Here it means it:

• ga djeca stvarno vole = the children really like it

Since špinat is masculine singular, ga is the correct pronoun.

This is because ga is a clitic in Croatian.

Clitics are short unstressed words that usually appear near the beginning of the clause, often in the so-called second position. Because of that, Croatian word order is often different from English.

So instead of:

• djeca stvarno vole ga — not natural

Croatian prefers:

• ga djeca stvarno vole

This may feel strange to English speakers at first, but it is very normal in Croatian.

Yes, that is also possible in many contexts.

Croatian word order is flexible, but not random. Different orders can sound more neutral, more emphatic, or more stylistically marked.

• ga djeca stvarno vole puts the clitic early, which is very natural
• djeca ga stvarno vole can also work, depending on rhythm and emphasis

In the given sentence, ga djeca stvarno vole sounds smooth and idiomatic.

Djeca means children and is grammatically plural in meaning, even though it is a special noun.

That is why the verb is plural:

• djeca vole = the children like

Not:

• djeca voli

So even if the form does not look like a regular plural to a beginner, you should learn it as:

• djeca = children
• it goes with plural agreement

Stvarno means really.

It adds emphasis:

• djeca vole = the children like it
• djeca stvarno vole = the children really like it

It makes the reason sound more genuine and stronger. The speaker is saying the real motivation is not fashion, but the fact that the children genuinely enjoy spinach.

Yes, in context it means something like fashionable, trendy, or currently popular.

So the idea is not that spinach is literally stylish like clothing, but that it may be considered a trendy food. The sentence contrasts:

• a superficial reason: because it’s trendy
• the real reason: because the children actually like it

That kind of slightly figurative use is perfectly natural.

Normally, kuham is the best choice here.

• kuhati is imperfective
• it works well for a general, repeated, or ongoing action

A perfective verb such as skuhati focuses more on completing the action. In the present tense, perfective verbs usually refer to future meaning, so it would not fit as well here.

So:

• Ne kuham špinat... = I don’t cook spinach...

  is the natural way to express a general reason.