Crunch up the Ramen noodles so they're separated, using a Ziploc bag and meat mallet. Empty the Ramen noodles into a large mixing bowl.
Add coleslaw mix, chopped onions, almonds, and sesame seeds. Toss gently to mix.
Mix together dressing ingredients with a small whisk. Pour over coleslaw mixture and toss to coat. Refrigerate until ready to serve.