If you can make the mayo the day before, the flavors will marinate longer. If not that is fine to.
Mix all the ingredients together, cover and refrigerate until you are ready to use it.
Sandwiches:
Cook bacon according to manufacturers instructions and to your liking. Set aside.
Cook the eggs. First whisk the eggs, heavy cream, salt and pepper together. Add them to a hot pan on medium heat. Continuously stir the eggs with a spatula so they cook evenly and do not burn. Cook until light and fluffy. Set aside.
Toast the sour dough bread in your toaster.
Assembly:
Lay out all the slices of bread in pairs and spread lemon mayo on one slice of each pair.
Lay lettuce on the bottom layer of bread, followed by the tomato and then the eggs.
Arrange two slices of bacon on top of the tomatoes.