Combine vinegar and milk in a small bowl, whisking until curdled. Allow it to sit for 5 minutes.
1 ⅓ cup soy milk, 3 tsp apple cider vinegar
Create a well in a bowl of flour and pour in the curdled milk. Add dry yeast, salt, and vegetable oil. Knead until the dough comes together. Shape it into a ball, cover it with plastic, and let it double in size for 1 hour.
2 tbsp vegetable oil, 2 ½ cup bread flour, 2 ¼ tsp dry yeast, 1 tsp salt
Divide the dough into 6-8 pieces, shaping each into a ball. Roll out the dough to form flatbreads.
Heat a dry skillet until very hot. Cook each flatbread until it bubbles on one side, then flip and cook for 30 seconds more.
Serve as is or enhance with melted butter, chili flakes, and cilantro