Begin by preparing your ingredients. In a large bowl, combine 1 (1 lb) package of cabbage coleslaw mix with 2 packages of ramen noodles that have been broken into small pieces, making sure to discard the flavor packets entirely.
Add 1/2 cup of slivered almonds or sunflower seeds and 1 small onion or 1 shallot that has been diced. Toss all these components together gently to distribute them evenly throughout the salad base. The key to maintaining the crispy texture is to keep these dry ingredients separate from the dressing until just before serving.
Next, prepare the dressing by whisking together 1/2 cup oil, 1/2 cup sugar, 2 tablespoons soy sauce, and 1/4 cup balsamic vinegar or red wine vinegar in a separate bowl.
Whisk vigorously until the sugar is fully dissolved and the dressing emulsifies into a cohesive, glossy mixture. Taste the dressing and adjust the balance of sweet and tangy flavors according to your preference—you may add more vinegar for extra acidity or a touch more sugar for sweetness.
Pour the dressing over the cabbage mixture just before serving and toss thoroughly to coat all ingredients evenly. This final step is paramount, as adding the dressing too far in advance will cause the ramen noodles to soften and lose their signature crunch.
Serve immediately while the salad is at peak crispness and the flavors are bright and balanced.