Kopi ini terasa terlalu pahit tanpa gula.

In Indonesian, demonstratives like ini (this) usually come after the noun:

• kopi ini = this coffee
• rumah itu = that house

So Kopi ini is the normal way to say this coffee.

English puts this before the noun, but Indonesian usually puts ini/itu after it.

Terasa means something like feels, tastes, or is perceived as.

In this sentence, it gives the idea that the coffee comes across as or tastes too bitter. So it is not just stating a fact in a flat way; it expresses how the coffee is experienced.

A rough sense is:

• Kopi ini pahit = This coffee is bitter
• Kopi ini terasa pahit = This coffee tastes bitter / This coffee feels bitter

With food and drink, terasa often sounds natural when talking about taste.

This is a very common question.

• merasa = to feel something, usually with a person as the subject
  
  • Saya merasa lelah = I feel tired
• terasa = to be felt / to feel / to be noticeable, often focusing on how something is perceived
  
  • Kopi ini terasa pahit = This coffee tastes bitter

So in your sentence, kopi is not doing the feeling like a person would. Instead, the coffee is perceived as bitter. That is why terasa works well.

Not exactly. Terlalu means too, in the sense of more than is desirable.

• terlalu pahit = too bitter
• sangat pahit = very bitter

So:

• Kopi ini terasa sangat pahit tanpa gula = This coffee tastes very bitter without sugar.
• Kopi ini terasa terlalu pahit tanpa gula = This coffee tastes too bitter without sugar.

The second one suggests a problem or excess.

No. Indonesian often does not use a verb equivalent to English to be in sentences like this.

So:

• Kopi ini pahit literally looks like Coffee this bitter
• but it means This coffee is bitter

In your sentence, the main predicate is terasa terlalu pahit. Indonesian does not need a separate is there.

Yes, you can.

• Kopi ini terlalu pahit tanpa gula = This coffee is too bitter without sugar
• Kopi ini terasa terlalu pahit tanpa gula = This coffee tastes/feels too bitter without sugar

The version with terasa emphasizes perception or sensory experience a bit more. Without terasa, the sentence is more direct and still completely natural.

Pahit is an adjective meaning bitter.

In Indonesian, adjectives can come directly after the noun in descriptive phrases, or after other words in predicate structures:

• kopi pahit = bitter coffee
• Kopi ini pahit = This coffee is bitter
• Kopi ini terasa pahit = This coffee tastes bitter

So in your sentence, pahit describes the taste of the coffee.

Tanpa means without, and gula means sugar.

So:

• tanpa gula = without sugar

It is a very common way to express absence:

• teh tanpa gula = tea without sugar
• kopi tanpa susu = coffee without milk

In the sentence, it explains the condition under which the coffee tastes too bitter.

In meaning, it applies to the whole situation: the coffee tastes too bitter when it has no sugar / without sugar.

So the natural interpretation is:

• This coffee tastes too bitter without sugar

It is not usually analyzed in everyday use as attaching only to kopi or only to pahit. It sets the condition for the taste judgment.

The sentence can be broken down like this:

• Kopi ini = subject noun phrase, this coffee
• terasa = predicate verb-like word, tastes / feels
• terlalu pahit = complement, too bitter
• tanpa gula = adverbial phrase, without sugar

So the structure is roughly:

Subject + predicate + description + condition

That is a very common Indonesian pattern.

Usually, for this coffee, you say kopi ini.

Ini kopi is possible, but it usually means something more like:

• This is coffee
• Here is the coffee
• This one is coffee

So the two forms are not generally interchangeable.

• kopi ini = this coffee
• ini kopi = this is coffee / this is the coffee

Indonesian does not have articles that work like English a/an/the.

So kopi can mean:

• coffee
• a coffee
• the coffee

The exact meaning depends on context.

In your sentence, kopi ini already specifies the noun clearly, so English naturally translates it as this coffee.

Yes, but the meaning changes.

• pahit sekali = very bitter
• terlalu pahit = too bitter

So:

• Kopi ini terasa pahit sekali tanpa gula = This coffee tastes very bitter without sugar.
• Kopi ini terasa terlalu pahit tanpa gula = This coffee tastes too bitter without sugar.

Use sekali for strong degree, and terlalu for excessive degree.

Pahit is pronounced roughly PAH-hit, with two syllables:

• pa
• hit

A useful note: the h is pronounced, unlike in many English words.

Very rough guide:

• kopi = KO-pee
• ini = ee-NEE
• terasa = teh-RA-sa
• terlalu = ter-LA-lu
• pahit = PA-hit
• tanpa = TAN-pa
• gula = GOO-la

Yes, it is natural and idiomatic.

It sounds like something someone might say when commenting on taste:

• Kopi ini terasa terlalu pahit tanpa gula.

A speaker might also say:

• Kopi ini terlalu pahit kalau tanpa gula.
• Tanpa gula, kopi ini terasa terlalu pahit.

All of these are natural, with only small differences in emphasis.