Here is something we can thank the Islamic world for: coffee. BBC gives an interesting account of the history of that beverage and how it came to the West:
Although a beverage made from the wild coffee plant seems to have been first drunk by a legendary shepherd on the Ethiopian plateau, the earliest cultivation of coffee was in Yemen and Yemenis gave it the Arabic name qahwa, from which our words coffee and cafe both derive.
Qahwa originally meant wine, and Sufi mystics in Yemen used coffee as an aid to concentration and even spiritual intoxication when they chanted the name of God. [Read more...]