Aus Kiwi, Mango und Ananas mache ich heute einen Obstsalat.

German often puts the element you want to emphasize in the first position. Here, Aus Kiwi, Mango und Ananas is placed first to highlight the ingredients.

Because that first slot is already taken, the conjugated verb must still stay in second position, so you get:

Aus Kiwi, Mango und Ananas mache ich heute einen Obstsalat.

A more neutral version would be:

Ich mache heute aus Kiwi, Mango und Ananas einen Obstsalat.

Both are correct.

Here, aus means from or out of.

So:

• aus Kiwi, Mango und Ananas = from kiwi, mango, and pineapple
• einen Obstsalat machen = to make a fruit salad

This is a very common pattern in German:

• aus etwas etwas machen = to make something out of something

Example:

• Aus Milch mache ich Pudding.
• I make pudding from milk.

In German, when talking about ingredients or materials in a general way, articles are often omitted.

So aus Kiwi, Mango und Ananas sounds natural when listing what something is made from.

You could add articles in some contexts, but here leaving them out is very normal.

The full nouns are:

• die Kiwi
• die Mango
• die Ananas

So grammatically, those nouns are feminine, even though you do not see the article here.

Aus always takes the dative case.

That is an important rule:

• aus + dative

In this sentence, you do not clearly see the dative because the nouns appear without articles. But if you used articles, you would see it more easily:

• aus der Kiwi
• aus der Mango
• aus der Ananas

So even though the forms Kiwi, Mango, Ananas do not change here, the case after aus is still dative.

Because Obstsalat is the direct object of mache, and direct objects usually take the accusative case.

The noun is:

• der Obstsalat = nominative
• einen Obstsalat = accusative

So:

• Ich mache einen Obstsalat.
• I am making a fruit salad.

That is why you see einen, not ein.

German very often forms compound nouns by combining words into a single word.

Here:

• Obst = fruit
• Salat = salad

Together:

• Obstsalat = fruit salad

This is completely normal in German. English usually separates such words more often, but German prefers combining them.

Also, like all German nouns, Obstsalat is capitalized.

Yes, heute can move. German word order is flexible, especially with time expressions like heute.

Your sentence has:

Aus Kiwi, Mango und Ananas mache ich heute einen Obstsalat.

But you could also say:

• Ich mache heute aus Kiwi, Mango und Ananas einen Obstsalat.
• Heute mache ich aus Kiwi, Mango und Ananas einen Obstsalat.
• Ich mache aus Kiwi, Mango und Ananas heute einen Obstsalat.

These versions are all possible. The differences are mostly about emphasis and style, not basic meaning.

They are most naturally understood as singular mass-like ingredient nouns here.

In other words, the sentence is not really counting individual fruits. It is naming ingredients in a recipe-like way:

• from kiwi, mango, and pineapple

That is why singular forms without articles sound natural.

If you wanted to talk about actual countable fruits, you might say something like:

• aus Kiwis, Mangos und einer Ananas

That would sound more like you are thinking about the individual pieces of fruit.

Yes. Einen Obstsalat machen is very natural German.

You could also hear:

• zubereiten = to prepare
• machen = to make

But machen is simple, common, and idiomatic here.

So this sentence sounds natural and everyday.

Sometimes yes, but the meaning is slightly different.

• aus focuses on what something is made from
• mit means with and focuses more on what is included or used

So:

• Aus Kiwi, Mango und Ananas mache ich heute einen Obstsalat. = I am making a fruit salad out of kiwi, mango, and pineapple.

• Ich mache heute einen Obstsalat mit Kiwi, Mango und Ananas. = I am making a fruit salad with kiwi, mango, and pineapple.

Both are possible, but aus fits especially well when the ingredients are being presented as the source material.

A helpful way to see it is:

Aus Kiwi, Mango und Ananas | mache | ich | heute | einen Obstsalat

So:

1. first position: Aus Kiwi, Mango und Ananas
2. verb in second position: mache
3. subject: ich
4. time expression: heute
5. object: einen Obstsalat

This follows the normal German main-clause rule: the finite verb comes second. Even if the subject is not first, the verb still stays in second position.