Ooh! I LOVE smoked trout! I'd make a salad with it. Flake the trout and mix with some peppery salad leaves (watercress, rocket, mizuna, mustard greens - -whatever floats your boat), some warm new potatoes and pearl beetroot (M&S do these and they are delish). Finish with a dressing made of 3 tbsp of mayonnaise mixed with 2 tsp of horseradish, the zest of 1/2 a lemon and a try generous grind of black pepper.