The “Recipe: Light of Dwayna” item (id = 49478) does not appear on the Trading Post if you want to buy it. You can search for ascended items, for “light” or “dwayna,” but it won’t show in the search results.
The only way I’ve been able to put in a buy order was to sell the one I got from a Giant Wintersday Gift and then search my “Items I’ve Sold” list.
John Smith: “you should kill monsters, because killing monsters is awesome.”