A Tomato Sandwich Worthy of a Little Bacon

INGREDIENTS

• 3 slices bacon, cooked crisp, crumbled and rendered fat reserved
• Toasted slices of a good rustic Italian bread
• 3/4 cup vegetable oil
• The best tomatoes you can find, sliced about 1/4 inch thick
• 1 room temperature egg
• 1 medium avocado
• 1 large clove garlic
• Juice of half a lemon
• Salt and pepper
• The Bacon-Avocado Aioli