Saffron is traditionally prized in Spanish paella for its color and aroma.
The dried stigmas of the saffron crocus release a distinctive fragrance and a golden-yellow color when infused in cooking liquid. In paella, saffron is added to the broth or rice mixture so its flavor spreads through the dish. Because each flower yields only a few stigmas, saffron is one of the world’s most expensive spices by weight.
Not every modern paella uses saffron. Some cooks use coloring agents, paprika, or commercially prepared seasoning instead, and recipes vary according to region and budget. Saffron also appears in many other Mediterranean and West Asian dishes, including risotto alla Milanese and Persian rice preparations. It should not be confused with turmeric: turmeric produces a strong yellow color but has a different flavor and botanical origin. The classic association of saffron with paella reflects both Spanish cooking tradition and the spice’s long history in Mediterranean trade.