question: What is a good beer pairing for Chocolate and walnut brownies?
answer: A great choice for Chocolate and walnut brownies is Baltic Fleet (Baltic Porter.). Here's the recipe:
  This Baltic Porter. features a complex malt bill including Pale Ale (4.32 kilograms), Munich Type 1 Light (0.6 kilograms), and Double Roasted Crystal (0.42 kilograms). The hopping schedule uses Magnum (12grams @ 70), and Amarillo (8grams @ 15) for balanced bitterness and aroma. Double Roasted Crystal is used when the astringency and bitterness inherent to roast malts is not desired. This means that it can be used at a higher rate in the grist to add complex caramel and dried fruit notes with a beautiful red-brown hue.