Saffron, often called red gold, is the dried thread-like stigma of the Crocus sativus flower. Each flower produces only three of these delicate threads, and they must be picked by hand at dawn before the heat of the day causes them to wilt. It takes roughly 150,000 flowers to yield one kilogram of saffron, which explains why it is the most expensive spice in the world. The threads are then dried gently, either in the shade or over low heat, until they become deep crimson and brittle. Good saffron has a sweet, hay-like aroma and a honeyed, slightly bitter taste that develops fully when the threads are steeped in warm liquid.

If you want to use saffron well, start by buying it from a reputable source. Look for threads rather than powder, since powder is easily adulterated with turmeric or safflower. The threads should be long, uniform, and dark red with only small yellow tips. Store them in an airtight container away from light and heat, where they will keep their potency for up to two years. When you are ready to cook, never sprinkle saffron directly into a dish. Instead, toast the threads briefly in a dry pan over low heat to release their aroma, then crush them with a pinch of salt or sugar and steep them in a few tablespoons of warm water, stock, or milk for at least fifteen minutes. This blooming step is essential, because it draws out the colour and flavour compounds that make saffron so distinctive.

Once bloomed, the saffron infusion can be added to rice dishes such as paella or risotto, stirred into soups and stews, or used to flavour desserts like ice cream and sweet buns. A little goes a long way: a generous pinch, perhaps twenty to thirty threads, is enough for a dish serving four people. Add the infusion near the end of cooking to preserve its aroma, and remember that saffron pairs beautifully with cardamom, cinnamon, garlic, and citrus. Beyond the kitchen, saffron has been valued for centuries in traditional medicine, and modern research has begun to explore its potential benefits.

The most studied benefit of saffron is its effect on mood. Several small clinical trials suggest that saffron extract may help ease symptoms of mild to moderate depression, possibly by influencing serotonin levels in the brain. Other studies have looked at saffron for premenstrual syndrome and for age-related macular degeneration, since the spice contains crocin, a powerful antioxidant that may protect the eyes. Saffron also shows promise as an aid for weight management, with some research indicating it may reduce snacking and curb appetite. Its antioxidants, including crocin and safranal, help neutralise harmful free radicals, and early evidence hints at anti-inflammatory properties that could support heart health.

That said, saffron is a spice, not a medicine, and the research is still preliminary. A few threads in your cooking will not treat any condition, and anyone considering saffron supplements should speak with a doctor first. Very high doses, in the range of several grams, can be toxic, so treat the spice with respect. Pregnant women in particular should avoid medicinal doses, though culinary amounts are generally considered safe. The simplest and most enjoyable way to benefit from saffron is to cook with it regularly, using modest amounts to add colour, fragrance, and a touch of luxury to everyday meals.

For more on this, see cooking with saffron.