Adapted from Williams-Sonoma’s The Art of Preserving: Sweet & savory recipes to enjoy seasonal produce year-round.
½ cup fresh mint leaves (optional), thoroughly rinsed, patted dry, and roughly chopped
4 cups white wine vinegar or rice vinegar
3 cups blackberries, crushed
A large, clean, nonreactive bowl
A nonreactive saucepan
2 one-pint bottles, sterilized just before using
In the saucepan, warm the vinegar over low heat until hot but not yet simmering; do not let it boil. Remove from the heat. Place the blackberries and the mint, if using, in the bowl. Pour in the hot
vinegar and stir to combine. Set aside to cool. Cover the bowl with plastic wrap and refrigerate for 2–4 weeks; the longer the vinegar stands, the stronger the flavor will be. Gently stir the vinegar
every few days to blend the flavors.
Strain the vinegar through a fine-mesh sieve and then through a coffee filter. Using a funnel, pour the filtered vinegar into hot, sterilized bottles. Cover tightly and store at room temperature for up to 2 months.