Lacto fermentation or natural pickling on the other hand is pickling using wild fermentation - think yogurt culture, natural wine...As you can see from the photo, there's living things in there.
The taste? Less obvious upfront acidity, a more mellow pickling if you will. It's almost as if there's a yogurt type flavor in there. Very interesting and definitely worth trying. Try Adamah pickles.
Here's a more detailed explanation of natural pickling from Sandor Katz:
“Wild fermentation involves creating conditions in which naturally occurring organisms thrive and proliferate. Fermentation can be low-tech. These are ancient rituals that humans have been performing for many generations. They are a powerful connection to the magic of the natural world, and to our ancestors, whose clever observations enable us to enjoy the benefits of these transformations.
By eating a variety of live fermented foods, you promote diversity among microbial cultures in your body. Biodiversity, increasingly recognized as critical to the survival of larger-scale ecosystems, is just as important at the micro level. Call it microbiodiversity. Your body is an ecosystem that can function most effectively when populated by diverse species of microorganisms. By fermenting foods and drinks with wild microorganisms present in your home environment, you become more interconnected with the life forces of the world around you. Your environment becomes you, as you invite the microbial populations you share the earth with to enter your diet and your intestinal ecology.”
— Sandor Katz, www.wildfermentation.com