Pesachim 75A

לקיוהא דפירא בעיניה. הכא ⁠— ליתא לקיוהא דפירא בעיניה.

sharpness of the fruit remains present in the vinegar in its pure, unadulterated form, despite the fact that the vinegar itself is not sharp. Here, the sharpness of the fruit does not remain present in the vinegar in its pure, unadulterated form because it has already been used with the meat. Therefore, the vinegar is no longer potent enough to keep the blood in the meat.

אין צולין את הפסח וכו׳. מעשה לסתור?! חסורי מיחסרא, והכי קתני: ואם אסכלא מנוקבת ⁠— מותר. ואמר רבי צדוק, מעשה ברבן גמליאל שאמר לטבי עבדו: צא וצלה לנו את הפסח על האסכלא מנוקבת.

It was taught in the Mishnah that one may not roast the Paschal lamb on a grill. Subsequently, the Mishnah quotes an incident in which Rabban Gamliel instructed his servant to roast the Paschal lamb for him on a grill. The Talmud expresses surprise: Was an incident cited to contradict what was previously stated? The Talmud responds: The Mishnah is incomplete and is teaching the following: And if it is a perforated grill, so that the fire reaches each part of the meat and the animal will not be roasted from the heat of the grill itself, it is permitted. And with regard to this R' Tzadok said that there was an incident with Rabban Gamliel, who said to his slave Tavi: Go and roast the Paschal lamb for us on the perforated grill.

בעא מיניה רב חיננא בר אידי מרב אדא בר אהבה: תנור שהסיקו בקליפי ערלה וגרפו ואפה בו את הפת, לדברי האוסר, מהו? אמר ליה: הפת מותרת.

The Talmud cites a discussion related to the subject of roasting the Paschal lamb. Rav Ḥinnana bar Idi raised a dilemma before Rav Adda bar Ahava: In the case of an oven that one fired with peels of fruit that are orla, i.e., fruit that grows on a tree the first 3 years after it was planted, from which one may not receive any benefit, if, after the oven became very hot, he swept it and removed the fuel and the ashes, and he baked bread in it, according to the opinion that prohibits bread baked directly with heat from orla fuel, what is the halakha with regard to this bread? It was baked with the heat trapped in the oven only after the fuel was removed. He said to him: The bread is permitted.