All you need is a fresh salmon and some juniper twigs.
And vegetables, of course. And an oven, and ...
Clean out the fish, arrange the twigs on a deepish oven tray, and arrange the salmon (skin and all) on top of the twigs. Put a few twigs into the belly cavity of the fish as well.
Bake at 200-225 degrees C for 40-45 minutes.
Serve hot. Aioli makes a nice sauce. And yes, this particular recipe needs no salt, no pepper, no dill, no lemon, nothing at all except the fish -- and a few stray juniper needles.
If you don't have a juniper (Juniperus communis) you can use spruce or fir twigs as well.
Related entry: Aioli - Picking juniper berries - Using juniper berries - Juniper berry toxicity.