To make the syrup: In a medium bowl, mash the strawberries with the ginger and maple syrup, using a fork. Let sit for 15 minutes to allow the mixture to get juicy.
Stir in the vinegar. Cover and chill for 3 to 5 days, to allow for the flavors to meld.
Transfer syrup into a jar. Can be stored in the fridge for up to 1 month.
To assemble shrub: for each serving, add 1oz shrub syrup to 5oz of sparkling water or alcohol. Add ice, if desired.
Garnish with sliced strawberries, mint sprigs, edible flowers or candied ginger