According to Julia, she first ate Gravlax in the Grand Hotel in Oslo and starting making it then. This recipe easily doubles and will keep (after the cure) for a week in the frig or can be frozen. It's easy to do; the hardest part is the slicing. You can serve it with sauce or, my favorite, just plain with cucumber and good bread, and, if you're adventurous, with some ice cold aquavit. Cooking time is curing time. Servings are estimated for appetizers.