Prepare the coleslaw dressing by removing the 2 tablespoons of peppers from the can. If the peppers are firm, chop them up into small fine pieces. Add mayonnaise and stir to combine.
Place shredded cabbage into a bowl, and sprinkle salt over cabbage.
Add red onion to the cabbage mixture, and stir in the coleslaw dressing. Combine until all cabbage is well coated. Add cilantro.
Adjust seasonings if necessary. Serve after refrigerating for about 1 hour for best flavor.