Create the Brine
In a small pot, pour 1 liter of water.
Add 1 tablespoon salt and 2 tablespoons sugar.
Stir to dissolve.
Bring the mixture to a gentle boil, then reduce the heat.
Add 100 milliliters of vinegar (white or rice vinegar).
Stir again for a few seconds, then turn off the heat.
Let the brine cool to room temperature.