This was an interesting one, that’s for sure. I’m not sure why it caught my eye to begin with, it’s definitely not a recipe I’d typically pick out of a lineup. But I saw the words fennel and pine-nut and kind of got excited. It sounded… I don’t know, fancy. Don’t tell me warm pine nut dressing doesn’t sound like something special? I admit, I had my doubts. Mainly the fact that the main ingredient in the dressing is porcini mushroom juice, the pungent liquid left over after rehydrating dried mushrooms. It does not smell good. But somehow, it all came together, stinky mushroom juice and all. I particularly liked the fennel puree, which could serve as a substitute for mashed potatoes in just about any situation. Though I am always slightly disappointed that the fennel flavor almost always cooks out, it’s never as potent as I would’ve liked. Maybe next time I’ll add in some fennel seeds at the end to really bring that flavor to the forefront. Meanwhile, in a microwave-safe container, combine the dried porcini with the boiling water. Microwave on high power for 2 minutes, until the porcini are plumped. In a medium skillet, heat 1 tablespoon of the oil. Add the pine nuts and the remaining 1 clove of garlic and cook over moderate heat until the nuts are golden, about 3 minutes. Remove from the heat and strain the porcini liquid into the skillet, stopping before you reach the grit at the bottom. (Reserve the porcini for another use.) Add the balsamic vinegar and simmer over moderate heat until the liquid is reduced to 2 tablespoons, about 5 minutes; discard the garlic. Add 2 tablespoons of the oil and season the dressing with salt and pepper. Heat the remaining 2 teaspoons of oil in a large nonstick skillet. Season the trout fillets with salt and pepper. Add one fillet at a time to the skillet, skin side down; press with a spatula to flatten for 30 seconds. Repeat with the remaining fillets until the pan is full. Cook over moderately high heat until the trout is browned on the bottom and nearly cooked through, about 3 minutes. Flip the fish and cook for 30 seconds longer. Spread the fennel puree on plates and top with the trout. Drizzle half of the dressing on top. Add the greens to the remaining dressing in the skillet and toss to coat. Mound the greens on the fish and serve.