For best results, use fresh, high-quality salmon (wild Alaskan or Norwegian farmed). Store gravlax in an airtight container in the fridge for up to 5 days or freeze for up to 1 month. Serve on rye bread with horseradish cream, or as smorrebrod with capers, pickled onions, and dill. Pair with sparkling water, Sauvignon Blanc, or aquavit.