1. Use light malt: Light malt has fewer calories than dark malt, so using it in your recipe will reduce the calorie count of your beer.

2. Reduce the alcohol content: Alcohol has a lot of calories, so reducing the alcohol content of your beer will also reduce the calorie count. You can do this by using less malt or adding more water.

3. Use low-calorie ingredients: You can use low-calorie ingredients like fruit or herbs to add flavor to your beer without adding too many calories.

4. Use a yeast strain that produces less alcohol: Some yeast strains produce less alcohol than others, so using one of these strains will also reduce the calorie count of your beer.