Vanilla orange jam (and cognac, perhaps)

Many years ago, I was lucky enough to meet a guy who often traveled to Greece, and a few times during the season, he came back with boxes of oranges that were at their peak of perfect ripeness, juiciness, sweetness, and so, so fragrant. They were everything you wanted oranges to be. And that was the time when I started making this jam, which I learned even a longer time ago (inspired by an Italian monastery recipe). I love it simple - with vanilla. But then, from time to time, with cognac. So, every year around January/February, when the best orange harvest is available, our home smells like oranges. Lots and lots of oranges.