For this recipe, we used cold smoked salmon. It is pretty easy to make and it will save you plenty of time because it comes in the package already sliced, so you will only need to season it. Clearly, you can use fresh salmon as well. In this case you will need a good quality piece of fresh salmon and skills to cut it into thin slices but the result will be delicious. Another great option without the smokey taste would be the Nordic gravlax or graavilohi, in Finnish.