"I've been to Zakhara a few times. The cities are beautiful and full of wonder. The food and drink aren't that bad either. The place is a bit too enlightened for my taste. You make lewd comment at a noble's daughter and all of a sudden you face the executioner's blade."
Arak is a clear, colorless, unsweetened anise flavored twice-distilled alcoholic drink popular on the Continent of Zakhara. It is extremely popular among the nomadic janni.
Being a medium strength alcohol, the constitution saving throw to avoid intoxication is DC 15.
If you want to add a bit of Zakhara to your game, there are a few Al-Qadim themed products in the Dungeon Master's Guild. Here are some of the more popular ones:
Al-Qadim Archetypes: Scimitars Against the Darkness - I've purchased this one and it provides a plethora of information. It's based on the original Al Qadim and Wolfgang Baur's "Campaing Journal: Scimitars Against the Dark" from Dragon Magazine.
There's also Elemental Magic of Zakhara and Seers of Zakhara. Both are pay what you want and written by the same author. Between the two there's a nice amount of Middle Eastern inspired magic.