Heat a pan over medium heat and melt butter. Sweat onions until very tender. Once onions are translucent and tender, add 2 Tbsp of Hong Kong sauce and 1 tsp of salt. Continue cooking for 5 more minutes. Remove onions from heat and allow to cool.\nOnce onions are cooled, whisk together remaining ingredients.\nServe with chips and assorted crunchy veggies!