Sweet and Sour Green Beans

fresh whole green beans

kosher salt

slices cooked bacon , reserving 2 slices for garnish

medium Vidalia or other sweet or yellow onion , quartered then thinly sliced

granulated sugar

apple cider or red wine vinegar

yellow mustard

Couple dashes Worcestershire sauce

Couple dashes hot pepper sauce , optional

dried tarragon

chopped fresh basil

Kosher salt and freshly cracked black pepper ,