In a salad bowl, toss together the cabbage, carrot, raisins, and walnuts.
In a small bowl, mix together the dill, ½ cup vegan mayonnaise, lemon juice, and sea salt. Pour over the vegetables and toss to coat. Taste and adjust salt if necessary. If you’d like a thicker dressing, add additional mayonnaise. Allow to sit for at least 20 minutes for the flavors to meld, or refrigerate for 2-4 hours before serving.