Alcohol-Free Guinness (Guinness 0.0%) ingredients primarily include water, malted barley, barley, roasted barley, fructose, natural flavourings, carbon dioxide, nitrogen, and hops, maintaining the classic stout's core components but processed to remove alcohol via cold filtration. The brewing starts with traditional ingredients (water, barley, hops, yeast) and then uses cold filtration to filter out alcohol without damaging flavour, blending it back for that signature smooth taste.