01 -
Warm up some water using a kettle, microwave, or stovetop until it’s steaming. Add the sugar and stir until combined. Pour in the apple cider vinegar, then add the spices (cinnamon sticks, ginger, bay leaf, black peppercorns, mustard seeds, and coriander seeds). Set the mixture aside to cool slightly.
02 -
Take the grapes off their stems and rinse them well. If any grapes are large, slice them in half so they can soak up more flavor.
03 -
Layer the grapes into a clean, large glass or ceramic container with a lid. Arrange the ginger slices, cinnamon sticks, and bay leaf throughout the layers. Pour the brine over the grapes, making sure they’re completely under the liquid. Toss in as much of the seasonings as you want. Let the container sit until it gets to room temperature, then seal it and pop it in the fridge. Chill for at least an hour before serving.