In a large pot, heat the milk until it comes to a boil.
Reduce the heat to medium-low and add the vinegar, stirring gently until the milk curdles.
Remove the pot from the heat and let it sit for a few minutes until the curds and whey separate.
Strain the curds through a cheesecloth or a fine-mesh sieve and press out as much liquid as possible.
Transfer the curds to a mixing bowl and add the salt, egg, and flour.
Mix well until the ingredients are fully incorporated.
Preheat a skillet over medium heat.
Shape the cheese mixture into small patties, a thin sheet on the bottom or balls and place them on the skillet.
Cook for about 3-4 minutes on each side until golden brown.
Serve warm and enjoy!