In a covered container, stir together the vinegar and sugar. Chop and/or muddle (lightly mash) the fruit and add it to the mixture, along with any whole herbs. Refrigerate for 2 days.
Step 2
Strain the syrup through a fine mesh strainer into a jar. Store the syrup refrigerated for up to 2 months.
Step 3
When ready to drink, place the shrub syrup, optional gin or aquavit and simple syrup, and sparkling water in a glass and stir well. If desired, garnish with more fruit and herbs.