Ecsettel mázazzuk a tálat.

It is ecset + the instrumental/comitative ending -val/-vel, which here means with / by means of.

So:

• ecset = brush
• ecsettel = with a brush / using a brush

In this sentence, it tells you the tool used to do the action.

Because the ending is normally -val/-vel, but after many consonants the v assimilates to the final consonant of the noun, and that consonant gets doubled in spelling.

So:

• ecset + vel → ecsettel

This is a very common Hungarian pattern. Similar examples:

• kéz → kézzel
• vonat → vonattal

It is the accusative ending, which marks the direct object.

So:

• tál = bowl
• tálat = bowl + object marker

In English, word order usually shows the object. In Hungarian, the object is often clearly marked with -t.

Because Hungarian uses two kinds of verb conjugation:

• indefinite conjugation: used when there is no definite object, or no object
• definite conjugation: used when the object is definite

Here the object is a tálat = the bowl, which is definite, so the verb must be in the definite conjugation:

• mázazunk = we glaze / we are glazing (no definite object)
• mázazzuk = we glaze the bowl / we glaze it

It tells you several things at once:

• mázaz- = the verb stem
• present tense
• 1st person plural = we
• definite conjugation

So mázazzuk means roughly we glaze it / we glaze the ...

The dictionary form is mázazni.

Because Hungarian verb endings already show the subject.

Here, mázazzuk already means we glaze. So the pronoun mi = we is normally omitted unless you want extra emphasis or contrast.

For example:

• Mi mázazzuk a tálat. = We glaze the bowl.
  This sounds more contrastive, like we do it, not someone else.

a / az is the Hungarian definite article, meaning the.

• a is used before a consonant sound
• az is used before a vowel sound

So:

• a tálat = the bowl
• az ecset = the brush

Because it does not have to. Ecsettel by itself usually means with a brush / using a brush in a general sense.

If you wanted to refer to a specific brush, you could say:

• az ecsettel = with the brush

So the version without an article sounds more like naming the method or tool.

Hungarian word order is more flexible than English word order. It often reflects topic, emphasis, or what the speaker wants to present first, rather than just grammatical roles.

Starting with Ecsettel puts the tool first:

• Ecsettel mázazzuk a tálat.
  = Using a brush, we glaze the bowl.

The object is still easy to identify because it has the accusative ending -t: tálat.

Other word orders are also possible, but they can sound slightly different in emphasis.

Because Hungarian spelling shows consonant length very clearly.

• In ecsettel, the t is doubled because of the assimilation of -vel
• In mázazzuk, the z is doubled in this verb form

These are pronounced as longer consonants, not just written decoration. Hungarian spelling is usually very consistent about this.

Yes, the verb form is present tense.

Depending on context, Hungarian present tense can describe:

• something happening now
• a general procedure
• an instruction or regular action

So in a practical or instructional context, this sentence can sound like this is how we do it, not only we are doing it right this second.

Yes:

• ecset-tel = brush-with
• mázaz-zuk = glaze-we, with a definite object
• a = the
• tál-at = bowl-ACC

So the structure is:

tool + verb + definite object

That is a very natural Hungarian pattern.