- 1/2 (8 ounce) package spaghetti
- 1 tablespoon butter
- 1 large leek – light parts only, rinsed, and chopped
- salt to taste
- 1/2 cup white wine
- 1/2 lemon, juiced
- 1 cup creme fraiche
- 1 teaspoon tarragon Dijon mustard
- 1 pinch cayenne pepper, or to taste
- 6 ounces skinless, boneless salmon, sliced
- 1/2 cup chopped cilantro, or to taste
- 1 pinch cayenne pepper
- Bring a large pot of lightly salted water to a boil. Cook spaghetti in the boiling water, stirring occasionally until cooked through but firm to the bite, about 12 minutes. Drain and return to the pot.
- Melt butter in a saucepan over medium heat. Cook and stir leek in butter until slightly softened, 6 to 7 minutes; season with salt. Pour white wine and lemon juice over the leeks, and bring to a boil while scraping any browned bits of food from the bottom of the pan with a wooden spoon. Simmer until most of the liquid evaporates, about 5 minutes.
- Stir creme fraiche, mustard, and 1 pinch cayenne pepper into the leek mixture. Reduce heat to low and let cook until warmed, about 5 minutes. Add salmon to sauce; cook and stir until salmon starts to flake and is no longer pink in the center, 2 to 3 minutes. Remove pan from heat and stir in cilantro. Pour sauce over spaghetti; toss to coat. Garnish with a pinch of cayenne pepper.