Step 1Heat the oven to 350 degrees. Butter a 9-by-5-inch loaf pan.
Step 2Cook the lardons in a small heavy-bottomed saute pan over medium-high heat to render the fat. Drain on paper towels.
Step 3In a mixing bowl, combine the flour, baking powder, baking soda and black pepper. In a measuring cup, combine the milk, olive oil and eggs and mix well.
Step 4Make a well in the center of the dry ingredients and add the wet mixture. Mix well. Fold in the lardons, olives and Gruyere.
Step 5Scrape into the prepared pan. Bake 40 to 50 minutes, or until an inserted toothpick comes out clean. Serve at room temperature or slightly warmed.