Clementine

Select a shot glass and chill it in preparation for serving.

Prepare a garnish by coating an orange wedge with sugar.

Refrigerate the Pallini Limoncello liqueur and the mandarin liqueur to ensure they are well-chilled.

Carefully layer the chilled liqueurs in the shot glass, pouring them in the order listed.

Instruct the drinker to consume the drink in one go, followed by biting into the sugar-coated orange wedge.