Since vinegar is only 5% acetic acid, taking 1/2 TSP of sodium, magnesium, or other acetate is probably equivalent to drinking a whole pint of vinegar, and in theory, should elicit a larger postprandial glycemic improvement.http://www.ncbi.nlm.nih.gov/pubmed/16015276http://care.diabetesjournals.org/content/27/1/281.fullhttp://www.life-enhancement.com/magazine/article/1711-effects-of-acetic-acid-vi