Make the curing mix by mixing all the ingredients together.
Place two large pieces of clingfilm on top of each other on your work bench, press down using a clean kitchen towel to "seal" them together. Repeat with one more double piece, slightly overlapping with the first one to create a large rectangle, big enough for your salmon side to sit on top of.
Sprinkle a little less than half the curing mixture on top of your prepared clingfilm, on a surface as big as your salmon side.
Place your salmon on the curing mix, skin side down, and top with remaining curing mixture.
Lift into a large tray and leave uncovered.
Refrigerate for 36-48 hours, turning your gravlax over a couple of times and removing the liquid that builds up.
When ready, rinse the gravlax briefly under cold water. Pat dry using kitchen paper or a clean kitchen towel, place on a clean tray and return to the fridge, uncovered for 3-6 hours for the surface to dry further.
If using any, drizzle with cognac, gin or aquavit. Then top with freshly chopped dill, crushed pink peppercorns, fennel and coriander seeds.
When ready to serve, slice thinly at an angle, detaching the slices from the skin. Serve with boiled new potatoes, soft salted butter, crisp tunnbröd [Swedish flatbread] or rye bread, and hovmästarsås - the sweet and tangy mustard sauce - recipe to follow!