There are several ways to increase your beer brewing yield, including:

Increase the amount of grains: Adding more grains to your recipe can increase the amount of fermentable sugars in your wort, which will result in a higher alcohol content and a larger yield.

Use a more efficient mash: A more efficient mash can help extract more fermentable sugars from your grains, which can increase your yield. Consider using a finer crush on your grains, or using a longer mash time.

Avoid boilovers: Boilovers can result in the loss of wort, which can decrease your yield. To avoid boilovers, use a larger pot, watch the pot carefully during the boil, and use a foam control agent if necessary.

Optimize your sparge: Sparging is the process of rinsing the grains to extract as much sugar as possible. To optimize your sparge, use the right water-to-grain ratio, and ensure that the water temperature is appropriate for the type of beer you’re brewing.

Use high-quality yeast: High-quality yeast can help ensure that your beer ferments completely, which can result in a higher yield.

Ferment at the right temperature: Fermenting at the right temperature can help ensure that your beer ferments completely, which can result in a higher yield.

By following these tips, you can increase your beer brewing yield and produce more delicious beer.