Cook bacon so that it's crispy, but not burnt.
Peel (optional) and quarter potatoes, and boil until almost soft.
Drain bacon on paper towels. Chop your onion and celery, and dandelion. Put into a large bowl, and add salt and pepper.
Mix together: potatoes, bacon, dandelion, onion, and celery. Drizzle your vinegar and oil slowly while mixing. If you want more bacon, it only tastes better! NOTE: dandelion should be chopped fairly fine.