Learn Finnish: Uusi papu on entistä aromikkaampi. - The new bean is more aromatic than before.

This showcases the partitive comparative structure. In Finnish, instead of using kuin (than), you can simply put the thing you are comparing against into the partitive case. Since entistä is the partitive of entinen (former), entistä aromikkaampi literally means more aromatic than the former.

How is the comparative aromikkaampi formed from its base adjective?

The base word is aromikas (aromatic or flavorful). For adjectives ending in -kas or -käs, the stem changes to -kkaa- or -kkää- before adding the comparative ending -mpi. This transforms aromikas into the stem aromikkaa-, resulting in aromikkaampi.

Could I express more aromatic than before using the word kuin (than) instead?

Yes, you could say Uusi papu on aromikkaampi kuin ennen and it would be perfectly correct. However, using entistä directly followed by a comparative adjective is a very natural and slightly more elegant Finnish idiom for expressing more [adjective] than before.

Is papu used for coffee beans in Finnish, or just vegetable beans?