Place the milk in a large pot. Heat over medium-high heat to 120 degrees F. if you don't have a candy thermometer, just touch the milk with your finger and the milk is ready when you can't stand the heat of it. Be careful, don't burn your fingers!
Remove from heat and add the vinegar. Stir well with a wooden spoon and Let it sit for about 40 minutes at room temperature.
Line a strainer with a layer of cheesecloth and place it over a large bowl.Pour the mixture into the cheesecloth Let drain for about 30 minutes. Squeeze out all the liquid, wrapping the curd with the cheese cloth. Add the salt and mix well.
Hang the cheese for about 30 minutes.
Place the quesito in molds or wrap with banana leaves and refrigerate for up to 2 days.