Discuss esterification. Use formulas of organic acids and alcohols to depict how an ester is formed by dehydration. Introduce the general formula and highlight that the oxygen atom between the alcohol and the acid is part of the alcohol moiety. Use examples of esters to indicate the nomenclature. Introduce salts of esters formed by reactions with sodium hydroxide. Discuss and show examples of esters which are used in food and drinks and are listed as artificial taste ingredients. Discuss and show synthesis of oil of wintergreen which is methyl salicylate.