Die Beeren im Joghurt sind süß.

Because Beeren is plural here and means berries.

In German, the definite article for plural nouns in the nominative is usually die:

• die Beere = the berry
• die Beeren = the berries

So die here does not mean the noun is feminine singular. It means the noun is plural.

The singular is die Beere.

So the forms are:

• die Beere = the berry
• die Beeren = the berries

This is a very common plural pattern in German: adding -n or -en.

Because the subject is plural: die Beeren.

German sein changes depending on the subject:

• ich bin
• du bist
• er/sie/es ist
• wir sind
• ihr seid
• sie/Sie sind

Since the berries is plural, you use sind:

• Die Beeren sind süß. = The berries are sweet.

If it were singular, you would use ist:

• Die Beere ist süß. = The berry is sweet.

im is a contraction of in dem.

So:

• im = in dem

This is extremely common in German.

In this sentence:

• im Joghurt = in the yogurt

You will often see similar contractions such as:

• am = an dem
• vom = von dem
• zum = zu dem

Because this sentence describes location, not movement.

German prepositions like in can take different cases:

• dative for location: where?
• accusative for direction/movement: where to?

Here, the berries are in the yogurt already, so this is a location idea:

• im Joghurt = in the yogurt → dative

If there were movement into the yogurt, you would use accusative:

• Ich lege die Beeren in den Joghurt. = I put the berries into the yogurt.

Because many masculine and neuter nouns in German do not change form in the dative singular.

Joghurt is masculine: der Joghurt.

So:

• nominative: der Joghurt
• dative with in dem: dem Joghurt
• contracted: im Joghurt

The article changes to show the case, but the noun itself often stays the same.

Because süß is a predicate adjective here, not an adjective directly in front of a noun.

After verbs like sein, werden, and bleiben, German adjectives usually do not take endings:

• Die Beeren sind süß.
• Der Joghurt ist kalt.
• Das Brot ist frisch.

But if the adjective comes before a noun, it does take an ending:

• die süßen Beeren
• der süße Joghurt

So:

• Die Beeren sind süß. = predicate adjective → no ending
• die süßen Beeren = attributive adjective → ending needed

It describes which berries we are talking about: the berries in the yogurt.

So the subject is really the whole noun phrase:

• Die Beeren im Joghurt

This means not just any berries, but specifically the berries that are in the yogurt.

In English, in the yogurt works the same way.

Because im Joghurt is still part of the subject phrase.

German main clauses usually put the conjugated verb in the second position, but position is based on sentence elements, not just individual words.

Here the first element is:

• Die Beeren im Joghurt

Then comes the verb:

• sind

So the structure is:

• Die Beeren im Joghurt | sind | süß

This is completely normal German word order.

Because all nouns are capitalized in German.

So in this sentence:

• Beeren is a noun
• Joghurt is a noun

That is why both begin with capital letters.

This is one of the most noticeable spelling differences between German and English.

A rough guide is: zyooss or zuess, but the exact sound is important.

Two key points:

• s at the start of a syllable before a vowel is usually pronounced like z
• ü is a special German vowel that does not exist in standard English

Also, ß is pronounced like ss.

So süß sounds approximately like züss, but with the German ü sound.

A useful contrast is:

• u as in gut
• ü as in süß

Yes, Joghurt is usually masculine: der Joghurt.

That is why im works here:

• in dem Joghurt → im Joghurt

You may occasionally encounter variation in usage depending on region or style, but der Joghurt is the standard form learners should know.

In English, that can sometimes sound natural, but in German the sentence uses a definite article:

• im Joghurt = in the yogurt

German often uses articles where English may sometimes omit them.

So the most direct grammatical reading is:

• The berries in the yogurt are sweet.

Depending on context, English might phrase it a little differently, but the German structure clearly contains the.