In a small bowl, whisk together the mayonnaise, vinegar, kosher salt, and black pepper.
Place the broccoli florets in a salad bowl. Add the dressing and toss to coat.
Mix in the bacon bits and the cheddar.
Cover and refrigerate the salad for 1-2 hours.
Remove the salad from the fridge 15 minutes before serving. Toss again, then serve.
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Notes
Don't try to serve this salad right after making it. It does need an hour or two in the fridge. The time it spends in the fridge allows the flavors to develop and meld. It also slightly softens the broccoli.You can keep the leftovers in the fridge, in an airtight container, for up to two days. Give them a gentle stir before serving them. I don't recommend freezing this salad.