Step 1: Preheat the oven to 350°F (175°C).
Step 2: Combine the oat milk and white vinegar in a small bowl. Let sit for 5-10 minutes.
Step 3: In a large mixing bowl, whisk together the flour, baking soda, salt, and sugar until combined.
Step 4: Pour the oat milk mixture into the dry ingredients. Stir gently until just combined.
Step 5: Transfer the batter to a greased or lined loaf pan.
Step 6: Bake in the preheated oven for 30-35 minutes, or until golden brown and a toothpick comes out clean.
Step 7: Cool in the pan for 10 minutes, then transfer to a wire rack to cool completely.
