he use of high gravity brewing technology has the advantages of increasing brewery capacity without extra capital expenditure, reducing the cost of energy and labor, improving the recovery of ethanol per unit of fermentable sugars and the stability of the final beer. However, high gravity brewing is a process using wort with higher sugar concentration than normal. Addition of sugar syrups to the wort is a popular technique to increase gravity but results in decreased levels of nitrogen in the wort leading to nitrogen limita- tion during fermentation [1]. Nitrogen limitation is a major factor responsible for the decline in fermentation activity noted during the early stages of fermentations and can cause sluggish or stuck fermentations [1,2].