In a small mixing bowl or measuring cup, whisk together the 1/3 cup red wine vinegar, 3 tablespoon vegetable oil, 1 teaspoon Kosher salt, 1/2 teaspoon ground black pepper and sugar until 2 tablespoons sugar and salt dissolves. This step is important so that you don't get grainy bits of undissolved sugar or salt in your coleslaw.
Pour over the 14 ounces coleslaw mix. Toss well. I find that using forks works best for coleslaw.
Cover and refrigerate for 1-24 hours. If you remember to toss it every few hours, great, if not, it will be fine.
Drain excess liquid before serving. The cabbage will lose its water, so you will have more liquid than you started with. This is normal.
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