Die Abkühlphase beginnt auf dem Kühlsieb.

Abkühlphase is a compound noun:

• Abkühlung = cooling
• Phase = phase, stage

So die Abkühlphase means the cooling phase or the cooling stage.

Using Abkühlung alone would refer more generally to cooling as a process or a drop in temperature. Abkühlphase is more specific: it is one stage in a larger process.

In German, all nouns are capitalized, not just proper names.

So in this sentence:

• die Abkühlphase
• dem Kühlsieb

both Abkühlphase and Kühlsieb are capitalized because they are nouns.

It is a compound noun, which is very common in German.

It breaks down like this:

• abkühlen = to cool down
• Abkühl- = cooling / cool-down
• Phase = phase

Together, Abkühlphase literally means cooling phase.

A useful thing to remember: in German compounds, the last part usually tells you the main category of the word. Since the last part is Phase, the whole word is a kind of phase.

Kühlsieb is also a compound noun:

• kühlen = to cool
• Kühl- = cooling
• Sieb = sieve, screen

So das Kühlsieb means something like cooling sieve or cooling screen.

As with many German compounds, the exact English translation depends on context. In technical or industrial language, it may refer to a perforated tray, mesh, or screen used for cooling material.

Because auf here is followed by the dative case.

The noun is das Kühlsieb:

• nominative: das Kühlsieb
• dative: dem Kühlsieb

So:

• auf dem Kühlsieb = on the cooling sieve

The article changes from das to dem because of the dative.

Auf is a two-way preposition in German, which means it can take either:

• dative for location: where something is
• accusative for direction/movement toward a place

Here, the sentence describes the location where the cooling phase begins, not movement onto the sieve:

• auf dem Kühlsieb = on the cooling sieve

So the dative is used.

Compare:

• Die Bohnen liegen auf dem Kühlsieb. = The beans are lying on the cooling sieve. → location, dative
• Die Bohnen kommen auf das Kühlsieb. = The beans go onto the cooling sieve. → movement toward, accusative

In a normal German main clause, the finite verb usually comes in second position.

This sentence follows that rule:

• Die Abkühlphase = first element
• beginnt = finite verb in second position
• auf dem Kühlsieb = the rest

So the structure is:

Subject + verb + other information

This is one of the most important word-order patterns in German.

Because the subject is die Abkühlphase, which is singular.

The verb beginnen is conjugated here for third person singular:

• ich beginne
• du beginnst
• er/sie/es beginnt
• wir beginnen
• ihr beginnt
• sie/Sie beginnen

Since die Abkühlphase is a singular noun, the correct form is beginnt.

Yes. Die Abkühlphase is the subject.

You can tell because:

• it is in the nominative case
• it is the thing that begins
• the verb beginnt agrees with it in the singular

So the basic sentence structure is:

• Die Abkühlphase = subject
• beginnt = verb
• auf dem Kühlsieb = prepositional phrase showing location

Yes, that is possible.

• beginnt is a bit more neutral or formal
• fängt ... an is common in everyday speech

So these are very similar:

• Die Abkühlphase beginnt auf dem Kühlsieb.
• Die Abkühlphase fängt auf dem Kühlsieb an.

The second version uses the separable verb anfangen, so an goes to the end in a main clause.

German and English are similar here, but not always identical.

A natural English version would be:

• The cooling phase begins on the cooling sieve.

Depending on context, English might also say:

• The cooling stage begins on the cooling screen.
• Cooling begins on the cooling tray.

So the German word order is straightforward here, but the exact English noun choice for Kühlsieb may vary depending on the technical context.

German allows some flexibility, as long as the verb stays in second position in a main clause.

For example:

• Auf dem Kühlsieb beginnt die Abkühlphase.

This means the same thing, but now the location is emphasized:

• On the cooling sieve, the cooling phase begins.

Notice that when auf dem Kühlsieb moves to the front, the verb beginnt still stays in second position, and the subject moves after the verb.

A rough guide is:

AHP-kuehl-fah-ze

A few important points:

• Ab sounds like ahp at the end because final b is pronounced more like p
• ü in kühl has no exact English equivalent; it is a front rounded vowel
• phase is pronounced roughly like FAH-ze

So the whole word is approximately:

AHP-kuehl-FAH-ze

If you cannot produce ü yet, learners often temporarily approximate it, but it is worth practicing because it distinguishes words in German.

Yes — a lot.

This sentence contains two typical German compounds:

• Abkühlphase
• Kühlsieb

Key rule: the last part of a compound determines the grammatical gender and the basic meaning category.

• die Abkühlphase → because die Phase
• das Kühlsieb → because das Sieb

So if you know the final noun, you can often predict:

1. the gender
2. the plural pattern
3. the general type of thing being described

That is a very useful strategy when reading German.