Pour the milk into a medium pot. Place on medium-high heat and, when it comes to a boil, turn the heat off and add the vinegar. Stir as the milk starts to curdle. Line a large sieve with cheesecloth and, holding it over the sink, pour the milk curds into it, letting the whey drain into the sink. Place the sieve over a bowl and fold the ends of the cheesecloth over the cheese. Set weights on top to press out excess liquid and refrigerate for several hours or overnight, until it's solid.
Recipe courtesy of Bal Arneson