Guinness Sourdough IngredientsIngredients for a loaf of beer-based sourdough.Guinness DoughA rough blend of flour and beer kick off a bread making effort.Sour-dudOver-proofed bread from late-June 2021 during a local heat wave.Honey Brown Lager BreadA loaf of sourdough cools on the countertop.Slice of SourA slice of sourdough bread rests on a cutting board.Sour HeelThe heel of a loaf of sourdough bread rests on a cast iron pan.Pan-tastic!A simple grilled cheese sandwich on a flat cast iron pan.Proof of BreadA well-proofed loaf in a baneton.