Start by bringing a pot of salted water to the boil to cook the pasta. Cook the pasta until about 2 minutes away from being properly cooked. So, not al dente yet. Drain, reserving 2 cups of pasta water.
250 dried spaghetti (reserve 2 cups pasta water)
Heat a non stick skillet with olive oil. Once hot, place the salmon (I don't remove the skin) skin-side up flesh side down into the pan. Don't overcrowd the pan if the salmon is too big or the pan small, cook the fillet at a time.
3 Tbsps olive oil, 2 boneless salmon fillets
Cook the salmon, medium-high heat, skin side down for about 3 minutes and gently flip to cook the skin side down for 4 minutes. Use a large spoon to scoop the oil up and baste the salmon as it cooks, do this 2 to 3 times per side. Remove the salmon and rest on a plate.
Same pan, same oil, on medium-high heat, add a tablespoon of butter to melt and cook the onions until soft. Add the garlic cook for 2 minutes and while it cooks, add the fresh lemon juice. Continue cooking the onion and garlic for a total of 4 to 5 minutes. Add the capers and mix them in and then add the white wine, make sure your heat is not too low, if it is increase it slightly, you want to see the gentle bubbles as it cooks.
2 cloves of garlic, minced, 2 shallots diced or a small onion, 1 tablespoon capers, 3 Tbsps white wine (just less than a ¼ cup)
Add the remaining tablespoon of butter and once the butter melts add the cooked spaghetti. Use a pair of tongs to lift the pasta as you mix it into the sauce. Regulate the heat by moving the pan on and off the stove just for a seconds as you mix. Pour in the reserved pasta water a dash at a time until you have the sauce you want. Note: You probably won't use all the pasta water.
2 Tbsps butter
Serve with the salmon, more melted butter (optional) chopped fresh parsely, lemon slices, fresh black pepper and parmesan cheese is optional.
1 teaspoon Salt and pepper, 1 fresh lemon, 2 Tbsps fresh parsley, black pepper, parmesan cheese