01 -
Finely shred both green and purple cabbages using a sharp knife, mandoline, or food processor with a fine slicing blade.
02 -
Grate the carrots and finely mince the onion.
03 -
Add the green cabbage, purple cabbage, carrots, and onion to a large mixing bowl.
04 -
In a separate small bowl, whisk together the mayonnaise, vinegar, mustard, sugar, salt, and pepper until smooth.
05 -
Pour the dressing over the shredded vegetables and mix until everything is well coated and creamy.
06 -
Taste and adjust seasoning as needed.
07 -
Cover and refrigerate for at least an hour to let the flavors meld and soften the texture.