Make the dry mix: whisk the flour, sugar, baking powder, baking soda, and salt together and store in an airtight container.
Stir the distilled white vinegar into the banana milk and let it sit for 5 minutes.
Add the oil and vanilla.
Pour into the dry mix and stir just until combined. A few lumps are fine.
Let the batter rest for 5 minutes. It should be thick but pourable. If it's too stiff, add banana milk 1 tablespoon at a time. If it's too thin, add 1 to 2 tablespoons of dry mix.
Heat a lightly oiled pan or griddle over medium heat. Pour about 1/4 cup of batter per pancake. Cook until bubbles form and the edges look set, then flip and cook until golden.