Roasted Rhubarb, Ginger and Lime Salad

At one time, all crofts throughout the Highlands would have had a rhubarb patch. Like potatoes and kale, it grows well in our climate. We only grow a small amount in our garden in the Cairngorms because we harvest the old crops that return faithfully every year in nearby derelict crofts. Throughout the Highlands the sour stalks of rhubarb tend to be treated as a fruit, stewed with sugar to make jam, tarts and crumble, often flavoured with ginger, vanilla or sweet cicely. Botanically, though