POUND for pound it is more expensive than gold, but two decades ago Spain’s golden crop was on the verge of disappearing. Price volatility and cheap imports from Iran had driven the country’s saffron producers to the brink, causing production to plummet from a high of 50,000kg in the 1980s to just 100kg in the late 1990s. Thankfully, producers such as Antonio Delgado decided to take matters into their own hands, creating…