Grilled trout with hazelnuts and horseradish

Someone once sent me an angry email saying I was a fool to extol the virtues of foraging, as didn’t I realize people are too busy to have time to go out and pick their dinner after a long day at work. I replied that he appeared to have missed the point. Isn’t it better to know when you just happen to be standing next to a hazelnut bush, rather than not?

This is an ideal little meal for when camping, hopefully beside a twinkling, gurgling, sunlit stream teeming with plump, freckled b