Grainfather Whirlpool and Aeration Brewing PaddleWhirlpooling and aerating your beer are great practices for any brewer who wants to make better beer. Typically you need a lot of extra equipment, but Grainfather has designed an all in one solution to help you make the best beer possible. The Whirlpool & Aeration Brewing Paddle allows you to create a strong whirlpool and aerate your wort simultaneously. The paddle has two half circle perdencilular to each other with large slots to allow air and