Cook the gemelli per instructions for al dente. Rinse with cold water to stop cooking and drain. Set aside.
Coarsely chop the spinach.
In a saute pan over medium heat melt butter. Once hot, add spinach. Cook until wilted. Remove pan from heat.
Take your piece of salmon and using your hands break into chunks. They will break up more when you are stirring so keep this in mind. Set aside.
Add cream or 1/2 and 1/2 to the warm pan, gently stir. Return to medium low heat. Add dill, crushed red pepper and salt & pepper to taste. If sauce is too thin, add a bit of Wondra to thicken.
Add pasta to the pan. Toss to coat thoroughly. Once the pasta is heated gently add the salmon. Blend into the pasta. Serve immediately.