44 Nedarim 6/6-9

(6) One who vows [abstinence] from meat, he is permitted [to eat] sauce [cooked in a meat dish] and top [food put on top of the meat when cooked]. Rabbi Yehuda prohibits [these foods]. Rabbi Yehuda said, a story: Rabbi Tarfon forbade me eggs that were cooked with it [meat]." They [the Sages] said to him, "This is so. [But] when [is it true]? When he said "This meat [is prohibited] upon me" because one who swears from something and then it gets mixed with something else, if it [the prohibited food is in a quantity] where it gives flavor, then it is prohibited [to eat this mixture].

(7) He who vows [abstinence] from wine, may eat food which contains the taste of wine. If he says, “Konam if I taste this wine”, and it falls into food, if it there is enough to impart taste [to the food] it is forbidden. He who vows [abstinence] from grapes is permitted wine; from olives, is permitted oil. If he says, “Konam if I taste these olives and grapes”, he is forbidden to eat them and that which comes out of them.

(8) He who vows [abstinence] from dates is permitted date honey; From winter grapes, is permitted winter-grape vinegar. Rabbi Yehudah ben Beteira says: if the name of its origin is upon it, and he vows to abstain from it, he is forbidden [to benefit] from what comes from it. But the Sages permit it.

(9) He who vows [abstinence] from wine is permitted apple-wine; from oil, is permitted sesame oil; from honey, is permitted date honey; from vinegar, is permitted winter grape vinegar; from leeks, is permitted porrets; from vegetables, he is permitted field-vegetables, because it is an accompanying name.