Learn Finnish: Onpa tämä koostumus outo! - Wow, this texture is strange!

The -pa suffix (or -pä) is an emphatic clitic. When added to the verb at the beginning of a sentence, it often expresses surprise, sudden realization, or strong feeling, which translates well to "Wow" or "Man," in English. Here, it turns the simple statement "This texture is strange" into an exclamation: "Wow, this texture is strange!"

Why does the verb onpa come first instead of tämä koostumus?

In Finnish, when you use an emphatic clitic like -pa, the word it attaches to must be moved to the very front of the sentence. Because we are emphasizing the verb on to express surprise, onpa takes the first position.

Does koostumus always mean "texture"?

It usually translates to "texture" when talking about food or physical materials, but its core meaning is "composition" or "makeup" (coming from the verb koostua, meaning "to consist of"). You will also see it used for things like the chemical composition of a substance.