01 -
Tear the lettuce into bite-size pieces, wash it well, and dry it thoroughly. Place it in a large heatproof bowl with the green onions, if using.
02 -
Cook the bacon in a large skillet over medium heat until crisp, 8-10 minutes. Transfer to paper towels and leave 3 tablespoons of drippings in the skillet.
03 -
Add the sliced sweet onion to the hot drippings. Cook for 2-3 minutes, stirring often, until the onion is glossy and just tender.
04 -
Stir in the apple cider vinegar, water, sugar, salt, and pepper. Let the dressing bubble for about 30 seconds, scraping up the browned bits from the skillet.
05 -
Immediately pour the hot dressing and onions over the lettuce. Toss quickly until the leaves are lightly wilted and coated.
06 -
Crumble the bacon over the warm lettuce. Taste for salt and pepper, then serve right away while the greens still have some texture.