Add oats or wheat One of the most popular ingredients used in stouts to add extra thickness are flaked oats. By using flaked oats as up to 10 percent of your malt bill, you can add greater viscosity. For ease of using oats, choose rolled or flaked oats.
The alcohol in beer is produced during fermentation, when yeast breaks down the sugar in the wort. If you limit the amount of alcohol produced during fermentation to under 0.5% ABV, you'll have a low-alcohol “non-alcoholic” beer.