Toast the rye bread in butter on the pan.
Poach two eggs.
Halve the romaine lettuce and grill them on the pan, with the core, in butter for a few minutes.
Once they have taken on some color, remove them from the pan.
Whisk your favorite hollandaise and add a teaspoon of coarse mustard.
Optionally, season the lumpfish roe with extra salt!
Finely chop red onion and chives.
Plate with rye bread, romaine lettuce, and lumpfish roe.
Pour hollandaise over the dish and garnish with red onion and chives.