Start the oven at 225 degree Celsius.
Cut a cross in the potatoes and place them in the middle of the oven for approx one hour.
Put the sour cream, lumpfish roe, salt, citron pepper and the dill in a bowl and stir.
Peel the shrimps if you use fresh ones, otherwise pour away the liquid from the shrimps.
Squeeze half a citron juice in the sauce and stir it all together.
Take out the potatoes from the oven and press on the sides so you get an opening, and add some sauce on the potatoes before serving them. It is nice to decorate the potatoes with some citron and shrimps.