Nedarim 49A

הנודר מן המבושל ⁠— מותר בצלי ובשלוק. אמר: ״קונם תבשיל שאיני טועם״⁠ — אסור במעשה קדרה רך, ומותר בעבה, ומותר בביצה טורמוטא ובדלעת הרמוצה. הנודר ממעשה קדרה ⁠— אין אסור אלא ממעשה רתחתה, אמר: ״קונם היורד לקדרה שאיני טועם ⁠— אסור בכל המתבשלין בקדרה.

Mishnah: In the case of one who vows that cooked foods are forbidden to him, he is permitted to eat roasted and boiled foods, as they are not defined as cooked. If one said: Cooked food is konam for me, and for that reason I will not taste it, he is prohibited from tasting a loose cooked food but is permitted to taste a thick one, which people do not generally refer to as a cooked food. And he is likewise permitted to eat a turemuta egg and the remutza gourd, as they are not considered cooked foods either. In the case of one who vows that food cooked in a dish is forbidden to him, he is prohibited from deriving benefit only from food that is cooked by boiling it in a dish. However, if one said: That which enters into a dish is konam for me, and for that reason I will not taste it, he is prohibited from tasting anything cooked in a dish.

גמ׳ תניא: רבי יאשיה אוסר, ואף על פי שאין ראיה לדבר ⁠— זכר לדבר, שנאמר: ״ויבשלו את הפסח באש כמשפט״.

Talmud: It is taught in a baraita: In the case of one who vowed that cooked foods are forbidden to him, R' Yoshiya maintains that he is prohibited from eating roasted foods. And although there is no biblical proof of the matter, there is an allusion to the matter, as it is stated: “And they cooked the Paschal offering with fire according to the ordinance” (II Chronicles 35:13). Since the Paschal offering must be roasted, it is evident that roasting can also be referred to as cooking.