Meanwhile, while the salmon is baking– Drain the soaked cashews and rinse them well with water. In a high-speed blender or food processor, add the soaked cashews, jalapeno, garlic, lemon zest, lemon juice, white wine vinegar, dill, salt, and water. Blend on medium for about 3 minutes until the crema is extremely smooth and a pale green. At first, it will look like it will not come together, but with patience and more time, the mixture will come together.