Notes: First of all, you're going to want to use a Pain de Mie bread. Pain de Mie is just a type of slice packaged French bread and "la mie" refers to the soft part of the bread, which is called the crumb. It has sugar in it, which makes it sweeter than most French breads.
Sophie Uliano discusses two different methods of pickling. The old fashioned method preserves cooked veggies in vinegar, while newer technique ferments raw vegetables in their own juices to create good bacteria with significant health benefits.