BLT Hot Dogs on Brioche

Name: BLT Hot Dogs on Brioche
Ingredients: For the bacon jam:; 3/4 pound thick-cut bacon, cut into ½-inch-thick lardons; 3 medium yellow onions, thinly sliced; 1/2 cup white balsamic vinegar; 1/4 cup granulated sugar; 1 tablespoon whole-grain mustard; Kosher salt, to taste; Freshly ground black pepper, to taste; For the hot dogs:; 6 St Pierre Brioche Hot Dog Rolls; 6 hot dogs (we used uncured frankfurters from Olympia Provisions); 3/4 cup bacon jam; 2 heirloom tomatoes, thinly sliced; 1 cup baby romaine leaves; 1/4 cup Kewpie-style mayonnaise; Freshly ground black pepper