Boil the pasta according to package instructions and reserve 1 cup of pasta water at the end. While the pasta cooks, put the beets, cashews, coconut milk, garlic, salt, and lemon juice in a blender on high and blend until smooth. When the pasta is cooked, drain and place in a pan. Pour in the pink beet sauce and the reserved ½ cup of pasta water. Mix everything together until the pasta is evenly coated in the sauce. Add more pasta water as