Το παγωτό με φιστίκι είναι το αγαπημένο της αδερφής μου.

They belong to two different parts of the sentence:

• το παγωτό = the ice cream
• το αγαπημένο = the favorite / favorite thing

In Greek, αγαπημένο is originally an adjective, but here it is being used like a noun. This is very common. Greek often uses article + adjective to mean the ... one / the ... thing.

So:

• το παγωτό με φιστίκι = pistachio ice cream
• είναι το αγαπημένο της αδερφής μου = is my sister’s favorite

Because it refers to το παγωτό, which is a neuter singular noun.

Greek adjectives must agree with the noun they describe in:

• gender
• number
• case

Since παγωτό is neuter singular, αγαπημένο is also neuter singular.

Compare:

• ο καφές είναι ο αγαπημένος μου = coffee is my favorite
• η σοκολάτα είναι η αγαπημένη μου = chocolate is my favorite
• το παγωτό είναι το αγαπημένο μου = ice cream is my favorite

Greek usually shows possession by using the genitive case.

So:

• η αδερφή μου = my sister
• της αδερφής μου = of my sister / my sister’s

In this sentence, της αδερφής μου depends on το αγαπημένο, so literally the phrase is:

• το αγαπημένο της αδερφής μου = the favorite of my sister

That sounds natural in Greek, even though English usually prefers my sister’s favorite.

In Greek, weak possessive pronouns like μου, σου, του, της, μας usually come after the noun.

So:

• η αδερφή μου = my sister
• το σπίτι μου = my house
• ο φίλος της = her friend

This is the normal placement in everyday Greek.

Yes, literally it means with pistachio.

In food expressions, Greek often uses με + noun where English might use:

• with
• flavored
• or an adjective

So παγωτό με φιστίκι can mean ice cream with pistachio or more naturally pistachio ice cream.

This is a very common pattern:

• καφές με γάλα = coffee with milk
• μακαρόνια με κιμά = pasta with minced meat
• γιαούρτι με μέλι = yogurt with honey

Because Greek often does not need one.

English often says:

• pistachio ice cream
• vanilla ice cream
• chocolate ice cream

Greek can express the same idea simply with με:

• παγωτό με φιστίκι
• παγωτό με βανίλια
• παγωτό με σοκολάτα

So the idea of flavor is understood from context.

Yes. Greek word order is more flexible than English word order.

This sentence could stay as:

• Το παγωτό με φιστίκι είναι το αγαπημένο της αδερφής μου.

But you might also hear:

• Το αγαπημένο της αδερφής μου είναι το παγωτό με φιστίκι.

Both are correct. The difference is mainly focus:

• first version: starts with pistachio ice cream
• second version: starts with my sister’s favorite

English can sometimes do this too, but Greek allows it more naturally.

Because Greek normally uses the verb είμαι (to be) in the present tense, just like English does in this kind of sentence.

So:

• είναι = is

The structure is:

• Το παγωτό με φιστίκι = subject
• είναι = verb
• το αγαπημένο της αδερφής μου = complement

Unlike some languages, Greek does not usually omit is in standard sentences like this.

No. You may also see αδελφή.

Both mean sister, but:

• αδερφή is very common in everyday Modern Greek
• αδελφή is a more conservative or formal form

So in normal spoken Greek, αδερφή μου is extremely natural.

No, it stays the same here.

The preposition με takes the accusative case, and for many neuter singular nouns like φιστίκι, the nominative and accusative forms are identical.

So:

• nominative: το φιστίκι
• accusative: το φιστίκι

That is why you do not see any visible change.

Yes. This is very common in Greek.

Greek often leaves out a noun when it is obvious from context, and the adjective with the article stands on its own:

• το αγαπημένο = the favorite one / favorite thing
• το καινούριο = the new one
• το παλιό = the old one

Here, το αγαπημένο really means something like:

• το αγαπημένο παγωτό = the favorite ice cream or more generally
• the favorite thing/item

Because παγωτό has already been mentioned, Greek does not need to repeat it.

A simple pronunciation guide is:

• Το παγωτό με φιστίκι είναι το αγαπημένο της αδερφής μου
• to pa-go-TO me fee-STEE-kee EE-ne to a-ga-pee-ME-no tees a-ther-FEES moo

A few helpful notes:

• γ before ω in παγωτό sounds like a soft sound, not like English g in go
• θ in αδερφής sounds like th in think
• the stress matters:
  • παγωτό
  • φιστίκι
  • είναι
  • αγαπημένο
  • αδερφής

Normally, no.

In this sentence, the articles are important and sound natural:

• το παγωτό
• το αγαπημένο
• της αδερφής μου

If you remove the articles, the sentence becomes unnatural or changes meaning.

Greek uses the definite article much more often than English, especially with:

• nouns in general statements
• possessed nouns
• adjectives used as nouns

So even where English might say pistachio ice cream is my sister’s favorite, Greek naturally keeps the articles.