Prep the cabbage: Remove the tough outer leaves.
Quarter the cabbage, cut out the core, and slice very thinly with a sharp knife or mandoline. Add to a large mixing bowl.
Add the rainbow: Julienne or grate the carrots. Slice the red bell pepper into thin strips.
Add to the bowl with the cabbage.
Chop the herbs and onions: Roughly chop cilantro and slice green onions. Toss them into the bowl for freshness and zip.
Make the dressing: In a jar or small bowl, whisk lemon juice, apple cider vinegar, olive oil, maple syrup, ginger, garlic, Dijon, salt, and pepper. Add sesame oil if using.
Taste and adjust sweetness, salt, and acid.
Toss and rest: Pour the dressing over the veggies and toss thoroughly. Use your hands or tongs to coat everything evenly. Let it sit for 10–15 minutes to soften slightly and soak up flavor.
Add crunch: Sprinkle in the toasted seeds and nuts just before serving so they stay crisp.
Taste and finish: Add a pinch more salt, a squeeze of lemon, or a drizzle of maple syrup if needed.
Serve chilled or at room temperature.