Cut the broccoli and red onion into small pieces. Fry the bacon until it’s crispy, then cut it into small pieces. Toss broccoli, onion and bacon together in a salad bowl. To make the salad dressing: Mix together mayonnaise, vinegar, sugar and coleslaw salad dressing to taste, adding a bit of everything until it tastes good to you. Pour dressing over salad, toss and serve.