Adam Olearius (or Oelschlager), a German Orientalist (1599–1671), traveled in Persia as secretary to a German embassy in 1633–36. Upon his return he published an account of his journeys. In it, under date of 1637, he says of the Persians:
They drink with their tobacco a certain black water, which they call cahwa, made of a fruit brought out of Egypt, and which is in colour like ordinary wheat, and in taste like Turkish wheat, and is of the bigness of a little bean.... The Persians think it allays the natural heat.
In 1637, Joh. Albrecht von Mandelsloh, in his Oriental Trip, mentions "the black water of the Persians called Kahwe", saying "it must be drunk hot."
Coffee drinking was introduced into Germany about 1670. The drink appeared at the court of the great elector of Brandenburg in 1675. Northern Germany got its first taste of the beverage from London, an English merchant opening the first coffee house in Hamburg in 1679–80. Regensburg followed in 1689; Leipsic, in 1694; Nuremberg, in 1696; Stuttgart, in 1712; Augsburg, in 1713; and Berlin, in 1721. In that year (1721) King Frederick William I granted a foreigner the privilege of conducting a coffee house in Berlin free of all rental charges. It was known as the English coffee house, as was also the first coffee house in Hamburg. And for many years, English merchants supplied the coffees consumed in northern Germany; while Italy supplied southern Germany.
Other well known coffee houses of old Berlin were, the Royal, in Behren Strasse; that of the Widow Doebbert, in the Stechbahn; the City of Rome, in Unter-den-Linden; Arnoldi, in Kronen Strasse; Miercke, in Tauben Strasse, and Schmidt, in Post Strasse.
Later, Philipp Falck opened a Jewish coffee house in Spandauer Strasse. In the time of Frederick the Great (1712–1786) there were at least a dozen coffee houses in the metropolitan district of Berlin. In the suburbs were many tents where coffee was served.
The first coffee periodical, The New and Curious Coffee House, was issued in Leipsic in 1707 by Theophilo Georgi. The full title was The New and Curious Coffee House, formerly in Italy but now opened in Germany. First water debauchery. "City of the Well." Brunnenstadt by Lorentz Schoepffwasser [draw-water] 1707. The second issue gave the name of Georgi as the real publisher. It was intended to be in the nature of an organ for the first real German kaffee-klatsch. It was a chronicle of the comings and goings of the savants who frequented the "Tusculum" of a well-to-do gentleman in the outskirts of the city. At the beginning the master of the house declared:
I know that the gentlemen here speak French, Italian and other languages. I know also that in many coffee and tea meetings it is considered requisite that French be spoken. May I ask, however, that he who calls upon me should use no other language but German. We are all Germans, we are in Germany; shall we not conduct ourselves like true Germans?
In 1721 Leonhard Ferdinand Meisner published at Nuremberg the first comprehensive German treatise on coffee, tea, and chocolate.
During the second half of the eighteenth century coffee entered the homes, and began to supplant flour-soup and warm beer at breakfast tables.