法華義疏 11.100

11.100

舌功德中得二種果：一者、得上味果，謂諸苦澁物至其舌根皆變成上味。此有二義：一、如天惡食變成上味，如餓鬼好食反成不淨。二者、佛咽喉中有甘露泉，和一切食皆成甘露，今持經人隨分有之。

Among the merits of the tongue, two kinds of results are attained: first, the result of attaining superior flavor, meaning that all bitter and astringent substances, upon reaching the root of the tongue, all turn into superior flavors. This has two meanings: first, like the bad food of gods turning into superior flavors, and the fine food of hungry ghosts conversely turning into impurities; second, in the Buddha's throat there is an ambrosia spring which blends with all food so that it all becomes ambrosia; the person who now upholds the sūtra possesses this in accordance with their measure.