DIY Sweetened condensed milk

Cleaning out my old drafts.

Some time ago I read an article on Lifehacker about Diy sweetented condensed milk.  It's semi rare that you need this stuff (really only for the holidays) so I don't keep it around, but it is extremely useful stuff if you have an inclination for making deserts.  Sure, you can just go buy it, but where's the fun in that?

The one linked by lifehacker on Dish-away.com used powdered milk, and that's just offensive on it's face. I don't keep it around as much now that we have kids because we buy milk by the gallon weekly, so I looked for a version that uses the milk I keep around to make the sweetened condensed milk.  This version from kitchensteardship.com seems like a winner, using butter raw sugar and whole milk, plus her method is about as lazy as you can get.  Dissolve the sugar in the milk and keep turning the stove down until you don't have to stir the milk while it cooks down.