For an extra layer of flavor, try grilling the asparagus lightly after poaching. This imparts a smoky char that complements the salmon beautifully. Use high-quality smoked salmon for the best flavor. Wild-caught salmon is preferable. Fresh dill or chives can be used in place of parsley for a different herbal note. A squeeze of fresh lemon juice just before serving brightens the flavors and adds a touch of acidity.