Grape-Nuts Semifreddo with Miso Caramel

The idea for this recipe comes straight from my mom. She was born and raised in Maine and used to eat Grape-Nuts ice cream in the summer with her friends. Apparently, that’s a thing. When my brother and I were growing up, she passed along this weird tradition on to us, complete with happy memories of churning ice cream in the garage, waiting impatiently for the tiny ice crystals to form. Writing this book, I’ve been struggling to think of anything better as a kid than eating freshly spun ic