These are our favorite waffles to make on weekends, then have leftovers throughout the week! They are long fermented with a sourdough starter and turn out perfect every time.
In a large pot on the stove, melt the butter. When melted, turn off heat and whisk in milk. This will balance out the temperature to allow you to add the sourdough starter. It's important that the butter/milk mixture is not over 110 degrees so you don't kill the starter.
Stir in flour, sea salt, cinnamon, and maple syrup. Cover and let sit at room temperature for 8 hours or overnight.
When ready to cook preheat a waffle maker. Whisk in the eggs and baking soda. Cook in a waffle maker at a setting you normally use; for my waffle maker, it's medium. Serve hot, or let cool and store sealed in the refrigerator or freezer. Top with butter, maple syrup, yogurt, berries, or anything you like.