Cook potatoes and carrot until fork soft. Allow to cool and peel off the skins.

Separately cook 1-2 beets until fork soft. Peel off skins. (use a paper towel to help)

Once beets are cooled, grate then into a bowl, add diced onion and season with a pinch of salt, sugar and 1-2 Tbsp of mayonnaise to your taste.

Slice potato into even slices about 1/4" thickness, season with a pinch of salt and drizzle a little bit of mayonnaise on each slice.

Follow with a slice of carrot, then add about 1Tbsp of the beets mixture.

Top it off with a slice of herring or sprats.

Garnish with greenery if desired.