I assumed I'd be making the dulce de leche, but the recipe has you buy it. Living in Arizona, where Latin food items are plentiful, I thought this would be no problem. I went to 3 grocery stores to find it and almost gave up, hoping that there was some mistranslation and dulce de leche was actually sweetened condensed milk (it's not!). The picture is dulce de leche on the right and sweetened condensed milk on the left. Easy to confuse, right?
The recipe says to refrigerate for 2 hours. I would suggest freezing for 2 hours or refrigerating for 4 hours. These were a bit "gummy" to cut and didn't look very pretty.