Welsh Rarebit on Beer Waffles with Bacon and Tomatoes Recipe

Name: Welsh Rarebit on Beer Waffles with Bacon and Tomatoes Recipe
Ingredients: For the Waffles; 1 3/4 cups (about 8 1/2 ounces) all-purpose flour; 2 tablespoons sugar; 2 teaspoons baking powder; 1 teaspoon baking soda; 1 teaspoon salt; 3 large eggs, separated; 1 1/2 sticks unsalted butter (6 ounces), melted; 1 cup buttermilk; 3/4 cup porter ale; Cooking spray; For the Sauce and Assembly; 16 strips thick-cut bacon; 12 scallions, thinly sliced; 4 tablespoons unsalted butter, cut into 4 pieces; 4 tablespoons all-purpose flour; 2 teaspoons Worcestershire sauce; 2 teaspoons dry mustard; 1/8 teaspoon cayenne pepper; 1/2 cup heavy cream; 1/2 cup porter ale; 2 large egg yolks; 2 cups (8 ounces) shredded extra-sharp yellow cheddar cheese; Salt and pepper; 16 thick slices tomato from 4 large, ripe tomatoes