This is a unique Spanish breakfast custard that my Puerto Rican father loved as a child and something my mother made for us as we were growing up. It takes patience to whisk the custard for 25 minutes, but the results are very delicious and warming on a cold winter morning.
Inspired by my Greek mother-in-law's Kokkinisto. I decided to add clams for something different. Spoon over rice or angel hair pasta, sprinkle with crumbled feta cheese, and serve with crusty bread and white wine.