Taman kad glaziramo vrč, glazura postane plava.

Taman kad means just when, right when, or exactly when.

So Taman kad glaziramo vrč... gives the idea that the second event happens at that very moment.

A useful note: taman by itself can also mean things like exactly, just enough, or just right, but in this sentence it is specifically adding emphasis to kad.

Only slightly.

• kad = the shorter, very common form
• kada = the longer form, often a bit more formal or emphatic

In this sentence, kad is completely natural. You could also say Taman kada glaziramo vrč..., but kad sounds more everyday.

Because Croatian usually drops subject pronouns when they are not needed.

The ending of the verb already tells you who the subject is:

• glaziram = I glaze
• glaziraš = you glaze
• glaziramo = we glaze

So glaziramo already means we glaze / we are glazing. Adding mi would only be for emphasis:

• Taman kad mi glaziramo vrč...

That would sound like just when we are glazing the jug..., with extra stress on we.

Glaziramo is the 1st person plural present of glazirati.

In Croatian, the present tense can be used for:

• something happening now
• something habitual or repeated
• something used in a vivid, narrative style

Here it works like when we glaze / when we are glazing.

Also, glazirati is an imperfective verb here, which fits an ongoing or background action well.

Vrč is the direct object, so it is in the accusative case.

However, vrč is a masculine inanimate noun, and in Croatian many masculine inanimate nouns have the same form in the nominative and accusative singular.

So:

• nominative: vrč
• accusative: vrč

That is why it looks unchanged.

A learner often expects a visible case ending, but here there is none.

Because Croatian has no articles.

So:

• vrč can mean a jug or the jug
• glazura can mean a glaze or the glaze

The exact meaning depends on context, not on an article like in English.

If Croatian wants to be more specific, it can use words like:

• taj vrč = that jug
• ova glazura = this glaze

But very often no extra word is needed.

They are related, but they are different parts of speech:

• glaziramo = we glaze → a verb
• glazura = glaze / coating / icing → a noun

So in this sentence:

• glaziramo vrč = we glaze the jug
• glazura postane plava = the glaze turns blue

The words are related in meaning, but one is the action and the other is the substance or coating.

This is a very important aspect question.

• postane comes from postati, a perfective verb
• postaje comes from postajati/postajati or the imperfective use of becoming, meaning more of an ongoing process

The difference is roughly:

• postane plava = turns blue / becomes blue at that point
• postaje plava = is becoming blue / is turning blue gradually

So postane focuses on the change being reached, not the process leading up to it.

In this sentence, that fits well: right when we glaze the jug, the glaze turns blue.

Also, Croatian often uses this kind of perfective present in statements that feel general, repeated, or tied to a time clause like kad.

Because je plava describes a state, not a change.

Compare:

• glazura je plava = the glaze is blue
• glazura postane plava = the glaze becomes / turns blue

So the actual meaning changes:

• je plava = already blue
• postane plava = changes into blue

This sentence wants the idea of transformation, so postane is the right choice.

Plava is an adjective in the feminine singular nominative form.

It agrees with glazura, which is feminine singular.

So:

• glazura = feminine singular
• plava = feminine singular

That is why it is plava, not:

• plav (masculine)
• plavo (neuter)
• plavi (plural or certain masculine forms depending on use)

A useful comparison:

• vrč je plav = the jug is blue
• glazura je plava = the glaze is blue
• more je plavo = the sea is blue

Because Taman kad glaziramo vrč is an introductory subordinate time clause, and it is separated from the main clause:

• subordinate clause: Taman kad glaziramo vrč
• main clause: glazura postane plava

So the comma marks the boundary between those two parts.

Yes. Croatian word order is fairly flexible.

For example, you could also say:

• Glazura postane plava taman kad glaziramo vrč.

That still means roughly the same thing.

The version with Taman kad... at the beginning puts more focus on the timing: right when...

So the original word order sounds natural because it highlights the surprising moment when the glaze changes color.

Most naturally, it sounds like a general or repeated pattern:

• Whenever / right when we glaze the jug, the glaze turns blue.

That feeling comes from the present-tense forms and especially from postane, which works well in this kind of repeated-event statement.

If you wanted one specific past event, Croatian would normally use past forms, for example:

• Taman kad smo glazirali vrč, glazura je postala plava.

That would mean a specific instance in the past:

• Just when we were glazing the jug, the glaze turned blue.