Sandwiches inspired by the island of Usedom

After the trip, it's time to eat. Wit, inspired by his journey on the island of Usedom, prepared his two types of the herring sandwich. We invite you to the Baltic Cuisine... from the kitchen side.

Ingredients:

5-6 salted herring flaps
butter roll with vinegar-pickled herring and caper sauce
1 butter roll
1 tablespoon butter
1 hard boiled egg
50g mayonnaise
10-15g large capers
1 Polish pickled cucumber
handful of leek sprouts
300ml spirit vinegar
800ml water
140g sugar
3 bay leaves
3 pieces of allspice
2 onions (sliced)
1 small red onion
salt