The reasons why this brand of beer contains no yeast are as follows:

1, yeast is just a catalyst, not directly added to beer. In the process of filtration, yeast will be filtered out, or in the process of pasteurization, microorganisms will be removed, so yeast does not need to be identified in the raw material list.

2. Heineken beer uses Heineken A yeast, which is a special yeast selection and propagation. This yeast has strong adaptability and stability, and can still maintain excellent brewing ability in harsh environment, ensuring the taste and quality of Heineken beer.