Afghan officials have repeatedly accused Iran of supporting the Taliban to prevent the construction of dams in the western region of the country.
Afghanistan's natural resources are 'more precious than gold', Chief Executive Abdullah Abdullah said in Davos, while peace talks between US and Taliban representatives continue in Qatar.
Nangarhar residents favour the Afghan sweet made from sugar cane over the Pakistani variant.
The annual bill the Taliban militants extort from local residents comes down to about 60 million AFN [$800,000], say Kunduz electricity officials.
Afghan saffron cultivation is expected to reach 14 tonnes by next year -- three years ahead of schedule, officials say.
Afghanistan will soon begin shipping its products to the European markets, done primarily through its two main ports, Aqina and Turghandi.
Efforts are underway to stem the import of inferior Iranian saffron, which President Ashraf Ghani banned October 7.
The Afghan government is providing incentives for Herat farmers to grow saffron, worth up to $8 per gram, instead of illegal or haram crops such as opium poppies.
Afghanistan moved up 16 places in the World Bank's rankings for ease of doing business.
Afghan saffron has been repeatedly ranked as the world's best, but low-quality saffron smuggled recently from Iran has either been mixed in with Afghan saffron or marketed as such, tainting the reputation of the product.
Poppy farmers in Nangarhar are switching to the legal, money-making flowers to supply perfumes and essential oil to local and foreign customers.
Iran's supreme leader Ayatollah Ali Khamenei said the country's economic problems were the result of internal mismanagement by the government.