Details elaborated by the Greek historian Herodotus “the father of history” narrate that great king of Persia Darius commissioned a navel party to explore the River Indus to its mouth. Led by lonian Greek named Skylax the expedition proceeded east and hit the Kabul River and then headed south to Arabian sea, the outfall of River Indus. The mission was followed soon and in 510 BC the Emperor Darius of what was then Persia invaded India where he found "the reed which gives “honey without bees". The secret of cane sugar, as with many other of man's discoveries, was kept a closely guarded secret whilst the finished product was exported for a rich profit.
It was the major expansion of the Arab peoples in the seventh century AD that led to a breaking of the secret. When they invaded Persia in 642 AD they found sugar cane being grown and learnt how sugar was made. As their expansion continued they established sugar production in other lands that they conquered, including North Africa and Spain.
During the Muslim Agricultural Revolution, Arab entrepreneurs adopted the techniques of sugar production from India and then refined and transformed them into a large-scale industry. Arabs set up the first large scale sugar mills, refineries, factories and plantations.
Sugar was only discovered by western Europeans as a result of the Crusades in the 11th Century AD. Crusaders returning home talked of this "new spice" and how pleasant it was. The first sugar was recorded in England in 1099. The subsequent centuries saw a major expansion of western European trade with the East, including the importation of sugar. It is recorded, for instance, that sugar was available in London at "two shillings a pound" in 1319 AD. This equates to about US$100 per kilo at today's prices so it was very much a luxury.
In the 15th century AD, European sugar was refined in Venice, confirmation that even then when quantities were small, it was difficult to transport sugar as a food