I think you could argue this two ways, thematically. Coffee originated in Africa, was really 'domesticated' in the Arabian Peninsula, and didn't come in via trade until the 17th century which isn't quite the right time period or setting for Haven. However... we have Silk already, which was also a Near East/Far East good.
If the intent was just another drink to cover the satiation hole, I think something else would fit -better,- but the concept is solid.