Not a fan of hazelnuts? Fermented oatmeal makes great base for any of your favorite oatmeal toppings. Do, though, pour a bit of buttermilk on top for serving—it's more complex than cream or milk. The oats will keep, still soaking, for up to a week in the fridge. —Riddley Gemperlein-Schirm
rolled oats (not instant)
plain yogurt, buttermilk, or whey
buttermilk (plus more for serving)
As much chopped, toasted hazelnuts, sliced dried figs, honey, and freshly ground black pepper as you'd like for serving
Combine the oats, water, and yogurt in a container (I used a mason jar). Seal the container with a cheesecloth and allow to sit at room temperature for 8 to 24 hours (the longer the oats sit, the more tangy the oats will be).
In a saucepan, combine the soaked oats and their liquid, buttermilk, salt, sugar, cinnamon, and cardamom. Bring to a boil over high heat, reduce heat to medium, and simmer—stirring occasionally—for 6 to 8 minutes or until the oatmeal is creamy and done to your liking.
Top with as much hazelnuts, figs, honey, and black pepper as you like and a drizzle of buttermilk.