Sweet, Savory, Crunchy, Tangy, DELICOUS! All the trendy restaurants are elevating sandwiches and burgers these days with pickled red onions. Who knew they are so incredibly easy to make! And they add a wonderful surprise to your ordinary burger.  I started making these a few months ago for my family, and now I have to keep a jar in the fridge weekly. They can’t get enough! Try them, you’ll love them, but be prepared to have to keep making them, because they will be requested.  Ice Cube Smoked Cheeseburger with Pickled Red Onions, and Potato Salad Ingredients 5 Small Sweet Red Onions  16 oz Apple Cider Vinegar 5 Tablespoons White…