Preheat the oven to 350 degrees F. Grease an 8x4 loaf pan with cooking spray or line with parchment paper, and set aside.
In a small mixing bowl, beat egg whites on high until they form stiff peaks, about 1 minute.
In a separate, larger mixing bowl, whisk together dry ingredients. Add in milk, vinegar, egg yolks, syrup and oil and beat until smooth. Fold in egg whites.
Transfer batter to prepared loaf pan and baking on center rack for 55 - 60 minutes.
Remove from oven, let cool in pan for 10 minutes, then transfer to a wire rack and cool completely.
Slice and serve.
Video
Notes
If you want to freeze this bread, simply slice the entire loaf, wrap it in tin foil then place in a plastic zipper bag. Freeze for up to three months.