1. Using a julienne slicer, cut the cucumbers lengthwise into spaghetti-like strips, stopping when you get to the watery centers. In a bowl, sprinkle the cucumbers with salt and knead gently to soften. Rinse the cucumbers and squeeze out any excess moisture. In a bowl, whisk the sour cream with the shallot and vinegar. Season with salt and white pepper, fold in the cucumber and dill and serve.