Nectarines are a sweet, fleshy stone fruit, similar to peaches but with smooth, reddish skin. Originating from Lleida, they provide various health benefits. It's essential to select and care for them carefully due to their fragility. The best specimens have a smooth, shiny skin and a slight give when touched. To enjoy their best flavor and texture, store nectarines in a cool, dry place away from direct sunlight.