- In a large bowl, combine the cucumbers, onions, and bell peppers.
- In a separate saucepan, combine vinegar, water, sugar, salt, black peppercorns, and mustard seeds. Bring to a boil, stirring until the sugar and salt dissolve.
- Pour the hot pickling liquid over the vegetables in the bowl.
- Let the mixture cool to room temperature, then cover and refrigerate for at least 2 hours before serving.
- Serve chilled and enjoy your salad!
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