For the apple-juniper herring, first boil the vinegar, sugar beet syrup and gin in a pot. Crush the juniper berries and add them.
Peel three of the apples and cut into strips, setting two aside for serving. Peel the onion and cut into fine rings, set a little aside for garnish. Place the onion and apples in the vinegar broth.
Cut the herring into pieces about 2 cm long and mix in. Allow the whole thing to infuse overnight in the refrigerator.
To serve, cut the two remaining apples into inch-thick slices, unpeeled. Spread a little pickled herring on the apple slices and top the apple-juniper herring with onion and fine apple strips.