Chop off the green part and the root of the leeks, discard. Split white part in half and wash well. Slice it finely.
Peel and chop carrots finely.
Heat 2 tablespoons ghee or butter in a large pan. Add leek and carrots, cook in low for approximately 10 minutes.
Discard dill stems, chop leaves coarsely.
Chop trout in large chunks.
Whisk eggs and season with salt and pepper. Mix in the veggies, trout and dill leaves.
Melt the other tablespoon of ghee or butter and grease the bottom of a large Pyrex baking tray. Pour the quiche mixture and bake until set, 40 - 50 minutes.
Cut in portions and serve, or keep in the fridge/freezer for later.