The Snow Day is a winter cocktail that was created by food writer and author Jessica Strand and was first published in Very Merry Cocktails: 50+ Festive Drinks for the Holiday Season. The recipe listed in the book called for mixing elderflower liqueur with dry sparkling white wine and topping it with frosted blueberries; our version adds in a homemade sous vide syrup for more blueberry flavor.
Pour sugar into a bowl.
Run blueberries under cold water, then add to bowl of sugar, roll until coated, and place in a freezer.
Freeze blueberries for 1 hour.
Add elderflower liqueur and blueberry syrup to a coupe glass.
Top with sparkling wine.
Garnish with candied blueberries.