In a large bowl, toss together the green cabbage, red cabbage, slivered almonds and poppy seeds.
MAKE THE DRESSING:
Combine the dressing ingredients in a jar, and shake to combine.
SERVE:
When ready to serve, toss the dressing (as much as you'd like- perhaps not all of it) with the salad. Sprinkle in the chow mein noodles and toss to combine.
Notes
How to toast slivered almonds: Preheat the oven to 350 degrees. Place the slivered almonds in a single layer on a rimmed baking sheet. Bake until lightly brown, about 5 min. Keep an eye on them, watching that they don't brown too quickly.