Cavolo Arricciato e Sformato Di Porri
Although cavolo nero (a.k.a. Tuscan kale, lacinato kale, or dinosaur kale) is what Roman cooks would likely use for this flan, the dish works well with other kale varieties, too.
Cooks' note:
• Custards can be made 1 day ahead and chilled, covered. Reheat in a water bath in a 325°F oven until hot, about 15 minutes.