Baby Carrot, Sugar Snap Pea & Celeriac Salad with Pecan Nuts & Toasted Coriander Seed Vinaigrette

Here is a full-textured, refreshing salad to accompany a mildly spiced fish curry or grilled pepper-crusted tuna steaks. For the latter, use a mixture of cracked white peppercorns with a good pinch of Sichuan pepper. Pat the tuna steaks with paper towel and spray very lightly with olive oil, then encrust with the pepper mixture, pressing it well into the fish on both sides. Place on a rack and refrigerate uncovered for 30-45 minutes to set the crust, then cook until rare in a heavy-based fr