Questions & Answers about Hann er enn að venjast sterkum núðlum með hvítlauk.
This is the Icelandic pattern vera að + infinitive, which often shows that something is happening right now or is still in progress.
So Hann er enn að venjast ... means he is still in the process of getting used to it.
A simpler present form like Hann venst ... can also refer to getting used to something, but er að venjast makes the ongoing process clearer.
Here enn means still.
So Hann er enn að venjast ... = He is still getting used to ...
In other contexts, enn can sometimes mean yet, especially in negatives or questions, but here still is the natural meaning.