Preparation

• Stand the apples on a cutting board and slice twelve 1/8-inch-thick rounds from the sides (not counting the small outermost slices); cut each round in half and arrange in a single layer on a platter.
• Remove the skin from the trout and flake the flesh. Toss with the chives, walnut oil, and black pepper.
• Using your fingers, divide the trout mixture among the apple slices. Use a small spoon to top each with a dollop of crème fraîche. Finely grate the zest from the lemon over all and serve.