1. Heat the oil in a large skillet over medium heat. Add the garlic and cook, stirring occasionally, for 1-2 minutes, until fragrant and just starting to turn golden in color (do not let it brown; garlic becomes bitter when browned).
2. Add half of the chard, filling the skillet completely, and stir it around to coat in the garlic oil. Season with salt, cover, and let sit for 1 minute to wilt. Uncover and add the remaining chard, season with salt and toss well to incorporate. Cover and let sit for another minute. Uncover and toss well again.
3. Add the vinegar and toss and turn until all of the chard is wilted and evenly seasoned.  
4. Finish with a sprinkle of fresh ground black pepper, stirring and tossing one more time to coat evenly. Serve immediately.

Source: Karen Falbo

Tips for What to Do with Excess Ingredients: Apple cider vinegar can be used in salad dressings, marinades, and consumed as a beverage (1 teaspoon to 1 tablespoon added to 8-ounces water).