Kad god mariniram meso, koristim začine.

Kad god means whenever.

It is made of:

• kad = when
• god = a particle that adds the sense of -ever

So Kad god mariniram meso... = Whenever I marinate meat...

In standard writing, it is normally written as two words: kad god.

In Serbian, the present tense is often used for repeated, habitual, or general actions, just like in English:

• Whenever I marinate meat, I use spices.

So:

• mariniram = I marinate
• koristim = I use

The sentence does not mean only right now. It means this is what the speaker generally does.

Serbian often omits personal pronouns when the verb ending already shows who the subject is.

Here:

• mariniram = I marinate
• koristim = I use

The ending -m tells you the subject is I, so ja is not necessary.

You could say Ja koristim začine, but it would usually sound more emphatic, like I use spices.

Mariniram is the 1st person singular present tense of marinirati = to marinate.

So:

• marinirati = to marinate
• mariniram = I marinate

This verb is a borrowed/international-type verb, so its pattern may look familiar if you know similar Serbian verbs ending in -irati.

Because meso is a neuter singular noun, and in Serbian the accusative singular of many neuter nouns is the same as the nominative singular.

Here, meso is the direct object of mariniram, so it is in the accusative:

• dictionary form: meso
• accusative singular: meso

So even though the case changes grammatically, the form stays the same.

Because začine is the accusative plural form of začin = spice / seasoning.

Here, koristim takes a direct object, so spices must be in the accusative plural:

• nominative singular: začin
• nominative plural: začini
• accusative plural: začine

So:

• koristim začine = I use spices

This is a very common pattern for masculine animate/inanimate nouns in the plural? More precisely here, you just need to remember that the object form is začine.

The dictionary form is začin.

Useful forms here are:

• začin = spice
• začini = spices (nominative plural)
• začine = spices (accusative plural)

In the sentence, you see začine because it is the object of the verb koristim.

Yes. Serbian word order is fairly flexible.

The sentence as given:

• Kad god mariniram meso, koristim začine.

You could also say:

• Koristim začine kad god mariniram meso.

Both mean essentially the same thing: Whenever I marinate meat, I use spices.

The original version sounds very natural because it starts with the time/condition idea first.

The comma separates the subordinate clause from the main clause.

• Kad god mariniram meso = subordinate clause
• koristim začine = main clause

So the comma works like in English:

• Whenever I marinate meat, I use spices.

It helps show the structure clearly.

It is one very common way, especially in sentences like this.

For a learner, kad god is the most useful and straightforward equivalent of whenever.

Depending on context, Serbian can sometimes express similar ideas in other ways, but for this sentence kad god is exactly the natural choice.

Yes, a little.

In Serbian, habitual actions like this are normally expressed with imperfective verbs in the present tense. Here:

• mariniram
• koristim

Both describe actions as regular or repeated, not as single completed events.

That fits well with kad god = whenever, because the whole sentence describes a repeated pattern:

• every time this happens, that happens

So the sentence sounds natural and grammatically appropriate for a habitual meaning.

You could, but it is less neutral and less natural for a beginner to use.

The most ordinary order is:

• Kad god mariniram meso, koristim začine.

Putting meso before mariniram or splitting things differently can add emphasis or a slightly marked style. Serbian allows that more than English does, but the version you were given is the safest and most natural everyday choice.

In Serbian, as in English, a bare noun can be used in a general sense.

So:

• mariniram meso = I marinate meat

This does not have to mean one specific piece of meat. It can mean meat in general, as a type of food.

If the speaker wanted to be more specific, they could add other words, but in this sentence the general meaning is perfectly natural.