Step 1In a medium bowl, combine the mayonnaise, curry powder and chives. In a separate, medium, chilled bowl, beat the whipping cream to soft peaks. Fold about one-third of the whipped cream into the mayonnaise to lighten it, then fold in the remaining whipped cream. Set aside.
Step 2In a large bowl, toss together the frisee and watercress. Add just enough of the mayonnaise mixture to lightly coat, about 3 tablespoons. Toss, then transfer the salad to a platter.
Step 3In the same bowl, add the crab and the apple. Fold together gently, taking care not to break up, then add one-half cup of the remaining mayonnaise and fold gently to very lightly coat (the curry flavor should not be dominant). You may have some dressing left over.
Step 4Arrange the crab mixture in a low mound on the greens. Sprinkle the salad with toasted almonds and serve immediately.