01 - Cook the pasta in a large pot of salted boiling water according to the package instructions until al dente. Reserve 1/2 cup of pasta water, then drain the pasta.
02 - Melt the butter in a large skillet over medium heat. Add the shallots and garlic, sautéing until soft and fragrant, about 2-3 minutes.
03 - Pour in the white wine and let it simmer until reduced by half, about 3 minutes.
04 - Stir in the cream and lemon zest, bringing the mixture to a gentle simmer. Season with salt and pepper.
05 - Add the flaked hot smoked salmon and half the chopped dill. Warm through without overcooking.
06 - Add the drained pasta to the skillet, tossing to coat evenly in the sauce. If needed, add reserved pasta water a little at a time to reach the desired consistency.
07 - Remove from heat, stir in lemon juice, and adjust seasoning to taste. Serve immediately, garnished with extra dill, a grind of black pepper, and lemon wedges.