Prep the VegetablesThinly slice cucumbers and bell peppers and place in a glass bowl or jar.
Make the BrineIn a small saucepan, combine vinegar, sugar, ginger, sesame oil, and salt. Warm gently over medium heat, stirring just until the sugar dissolves. Do not boil.
Pour & PicklePour the warm brine over the vegetables. Let sit at room temperature for 15–20 minutes, or refrigerate for at least 1 hour for a deeper pickle.
Serve or StoreSprinkle with sesame seeds before serving, if desired. Store leftovers in the fridge for up to one week.