Fiskefilet med Remoulade paa Rugbrod

There is a particular rhythm to the Danish week, and Friday belongs to fish. It's not a rule anyone enforces, it's just how the kitchen turns. The fishmonger knows it, the supermarket knows it, and by late afternoon on a Friday you'll see people walking home with small paper parcels tucked under their arms. Inside, more often than not, a few fillets of plaice.

Fiskefilet med remoulade paa rugbrod is the sandwich those fillets are heading toward. A piece of plaice breaded and fried until the crust crackles, laid across a thick slice of dark rye, finished with a generous stripe of pale yellow remoulade, cool cucumber slices, and a squeeze of lemon. It sits somewhere between everyday food and small celebration, which is exactly where most of the best Danish cooking lives. Plaice, rodspaette in Danish, is caught in the shallow waters around the country, and though you can find it year-round, it's at its sweetest in early spring.

What matters most here is the crust. Three bowls, flour then egg then breadcrumbs, pressed firmly on both sides, and then fried in butter and oil until the outside is deep gold and the inside is still tender. Don't rush the butter. Wait until it foams and starts to smell like hazelnuts. That's the moment the fish goes in, and if you listen for the crackle when it hits the pan, you'll know you got the temperature right. Everything after that is assembly, and assembly is the easy part.