In this slow cooker beef and ale stew I have used the Old Speckled Hen gluten free ale, as I found it readily available in Sainsbury's free from aisle. Other gluten free ales I've spotted before include the Greene King gluten free ale and the St Peter's gluten free ale. Try searching your local craft beer shop as they often have gluten free ales from smaller, independent breweries. Any gluten free beer will work in this recipe - just remember that normal beer is not gluten free. Check out my guide to gluten free alcohol for more information.