Pickled Red Onion and Pineapple Salad (pairs amazingly with Pork Vindaloo)

This is a fresh salad-style accompaniment made from thinly sliced red onions quickly pickled with acidity (vinegar or citrus) and combined with sweet pineapple, finished with coriander. It is designed to bring freshness to reduce the heat and sweetness to balance the sourness of the pork vindaloo.