Soak the cashews in hot water for about 15 minutes. Then drain and set aside.
Cook the pasta: Bring a large pot of salted water to a boil. Add the pasta and cook according to the package instructions until al dente. Reserve about 1 cup of pasta cooking water, then drain the pasta and set aside.
Prepare the zest: To avoid a bitter tasting lemon sauce, use a knife to carefully trim away any remaining white pith (the whiter inner part) on the lemon zest.
Prepare the sauce: In a high-speed blender combined all the sauce ingredients. Blend until the mixture is completely smooth and creamy.
½ cup cashews , ⅛ cup olive oil, 2-4 tablespoon fresh lemon juice, 2 lemon peel strips, 1 garlic clove, ½ cup pasta water, pinch of salt
Adjust taste and consistency: If the sauce is too thick, add a little more pasta water to reach your desired consistency. Feel free to add more lemon for more tangy flavors, more salt or more garlic.
Combine pasta and sauce: Transfer the blended sauce to a saucepan (I used the same one I cooked the pasta in but without the pasta in it). Heat over low heat until warmed through, stirring occasionally. Add the pasta, give it a good stir and enjoy!