Kaşarlı börek çok lezzetli.

Kaşarlı comes from kaşar + -lı.

• kaşar = a type of cheese
• -lı = a suffix meaning with, containing, or having

So kaşarlı means with kaşar cheese or cheesy with kaşar.

This is a very common Turkish pattern:

• sütlü = with milk
• tuzlu = salty / with salt
• peynirli = with cheese

In this sentence, kaşarlı börek means börek made with kaşar cheese.

In Turkish, the verb to be is often not stated in simple present-tense sentences like this when the subject is he/she/it or a noun.

So:

• Kaşarlı börek çok lezzetli
  literally looks like
• Cheese börek very tasty

But it naturally means:

• Cheese börek is very tasty

This is completely normal Turkish grammar.

If you want a more formal or emphatic version, you can say:

• Kaşarlı börek çok lezzetlidir

The meaning is basically the same, but -dir sounds more formal, definite, or written.

It breaks down like this:

• Kaşarlı börek = the subject noun phrase
• çok lezzetli = the predicate, describing the subject

So the structure is:

• [noun phrase] + [adverb + adjective]

More specifically:

• kaşarlı modifies börek
• çok modifies lezzetli

So Turkish is building the idea in this order:

• cheese-filled pastry
  • very tasty

Here, çok means very.

So:

• çok lezzetli = very tasty

A useful thing to know is that çok can mean different things depending on what it modifies:

• before an adjective: very
• with nouns or in other contexts: many / much / a lot

Examples:

• çok güzel = very beautiful
• çok insan = many people
• çok seviyorum = I love it a lot

In your sentence, because çok comes before lezzetli, it clearly means very.

In Turkish, descriptive words usually come before the noun they describe, just like in English.

So:

• kaşarlı börek = cheese börek
• lezzetli yemek = tasty food
• büyük ev = big house

That means kaşarlı is simply acting like an adjective here and comes before börek.

It can often be understood generically or indefinitely, depending on context.

Because Turkish does not use articles like a and the the way English does, kaşarlı börek could mean something like:

• cheese börek
• a cheese börek
• cheese börek in general

In a sentence like Kaşarlı börek çok lezzetli, it often sounds like a general statement: cheese börek is very tasty.

If the speaker were pointing at a specific one, context would make that clear.

Turkish does not have articles that work exactly like English a/an and the.

So a bare noun like börek can be interpreted from context.

Compare:

• börek = börek / a börek / the börek, depending on context
• bir börek = one börek / a börek

In this sentence, Turkish does not need an article. The meaning is understood naturally.

Yes.

• lezzet = taste, flavor
• lezzetli = tasty, flavorful, delicious

Again, this is the same -li / -lı / -lu / -lü suffix pattern meaning having or with.

So lezzetli literally means something like having flavor, but in natural English it is best translated as tasty or delicious.

This is a useful vocabulary-building pattern in Turkish.

A rough guide:

• Kaşarlı → ka-shar-luh
• börek → bö-rek
• çok → chok
• lezzetli → lez-zet-lee

A few important Turkish letters here:

• ş = sh
• ç = ch
• ö = a rounded vowel with no exact English equivalent; similar to German ö or French eu
• ı = a vowel with no exact English equivalent; it is not the same as English ee

So the whole sentence is approximately:

• ka-shar-luh bö-rek chok lez-zet-lee

Yes.

Both are correct:

• Kaşarlı börek çok lezzetli
• Kaşarlı börek çok lezzetlidir

The version without -dir is the most natural in everyday speech.

The version with -dir can sound:

• more formal
• more definite
• more like a general statement or written style

So for normal conversation, the shorter version is usually the one learners will hear most often.