-
Boil the eggs.
-
Peel and slice them in half horizontally.
-
Pull out the yolks and transfer them to a bowl.
-
Add the vinegar and mayo and mash everything together.
-
Season with Kosher salt and freshly ground pepper.
-
Cover the bowl with plastic cling film and freeze for 20 minutes.
-
Peel the carrot. Discard the outer peels. Then peel off long strips and slice those strips in half lengthwise.
-
Pour the sesame seeds out onto a flat plate.
-
Cut a slice off the bottoms of the empty shells so they stand up on their own without flopping over.
-
Take about a heaping teaspoon of the filling and rub it between your palms to form a ball. Then flatten it to form the brim.
-
Take about twice as much filling and mold the top part of the hat with your fingers. Place it on the brim.
-
Roll it in the black seeds and place it on the eggshell half.
-
Wind a carrot strip around the bottom of the hat just above the brim.
-
Plate and serve.