Dulce de leche or manjar, whatever you call it, is a sticky milk reduced to a caramel consistency. It's a treat, but given the hours of monitoring it, well, I think it's demanding. Excessively so! We had a bit too much milk at work, so I put a pot of it on the stove, added some sugar and proceeded to boil it along with a vanilla bean and a stick of vanilla. After what seemed hours, I got a dark complexioned and thickened confection; dulce de leche! Leche cemada?