Interim Study Guide - BJCP

or beer before adding to the base beer. For example, a detectable amount of lactic acid is approximately 0.4ml of 88% USP lactic acid to a 12 oz. sample of beer. Since most of us do not have access to pipettes tomeasure such a small quantity, 1/8 tsp may be added to 3/8 tsp distilled water, and 1/3 tsp of this solutionadded to the reference beer. This is equivalent to adding 1/12 tsp times 5 ml/tsp, or approximately 0.4 ml oflactic acid.Recommended amounts of several substances are listed in the table at the end of this section. For moreinformation on doctored beer seminars, contact Jay Hersh at bjcp_judge@doctorbeer.com or refer to theFocus on Flavors column in Brewing Techniques. The base beer should be a clean light lager with a crown(non-twist-off) cap so that it can resealed after doctoring. The amounts in the table below are appropriate in a12 oz. sample, but may be scaled to larger volumes. Note that spices and other solids should be extracted invodka, since the addition of dry substances to a carbonated beer will cause gushing. For the same reason, thebeers and adulterants should also be chilled to the same temperature before combining.The material in these classes can be comfortable covered in a time frame of three to five months, dependingon the needs and experience of the study group. Shorter courses have the advantage of keeping the materialfresh, while longer courses allow more intensive reading and reviewing in between classes. Note that the leadtime required to schedule a BJCP exam is approximately three months, so keep this in mind when planningthe study sessions. For more information, e-mail may be sent to the BJCP exam directors atexam_director@bjcp.org.37