In a bowl combine mayonnaise, apple cider vinegar, salt and pepper. Mix well.
Fold in frozen peas, cooked bacon, cubed cheese, and diced red onion.
Notes
TIP: if I am going to bring this salad somewhere I love using the peas frozen because it keeps the salad cool on it’s own. If you plan to use immediately I would place peas in a strainer and rinse with warm water to thaw prior to placing in the salad.