An employee checks freshly roasted coffee beans during cooling down in a tumbler at H. Schwarzenbach coffee roastery in Zurich, Switzerland December 4, 2018. REUTERS/Arnd WiegmannShow moreShow less
An employee looks at freshly roasted coffee beans cooling down in a tumbler at H. Schwarzenbach coffee roastery in Zurich, Switzerland December 4, 2018.Show moreShow less
A tourist takes a picture through the open window of H. Schwarzenbach coffee roastery in Zurich, Switzerland December 4, 2018.Show moreShow less
People look through the open window into H. Schwarzenbach coffee roastery in Zurich, Switzerland December 4, 2018.Show moreShow less
An employee took out some coffee beans from a drum type roaster to check the degree of roasting at H. Schwarzenbach coffee roastery in Zurich, Switzerland December 4, 2018.Show moreShow less
Freshly roasted coffee beans cool down in a tumbler at H. Schwarzenbach coffee roastery in Zurich, Switzerland December 4, 2018.Show moreShow less
Freshly roasted coffee beans fall into a tumbler after the drum type roaster is opened by an employee at H. Schwarzenbach coffee roastery in Zurich, Switzerland December 4, 2018.Show moreShow less
Tourists look through the open window into H. Schwarzenbach coffee roastery in Zurich, Switzerland December 4, 2018.Show moreShow less
An employee checks freshly roasted coffee beans during cooling down in a tumbler at H. Schwarzenbach coffee roastery in Zurich, Switzerland December 4, 2018.Show moreShow less