| Abstract: | Since the fine-coarse extract difference measured by the E.B.C. mill is smaller than that measured by the Miag mill it has been necessary to devise a new system for the evaluation of malt modification from the fine-coarse extract difference. For this purpose, members of the E.B.C. Analysis Committee who carry out routine analyses by the E.B.C. method have made their results available and the mean and frequency distribution of the extract differences of 3671 malts have been calculated. The mean value for extract difference was 2·41%, the most frequent was 2·3% and the smallest and largest were 0·1 and 6·7%. The new system is based on the most frequent value (2·3%). Modification is described as very full when the fine-coarse extract difference is less than 1·3%, full (1·3–1·9), normal (2·0–2·6), low (2·7–3·3) and very low (over 3·3). The fine-grind extracts of the 3671 malts ranged from 71·2 to 84·7%, with a mean value of 80·3% and a most frequent value of 80·7%. |
