If you hold ain b'gidin b'noisen taam then what if someone ate gid hanosheh achilas gasa would he be liable?
Mendy kaplowitz
(a) The Pri Megadim (YD 62:1) writes that even according to those that say Ein b'Gidim b'Nosein Ta'am one is only liable for eating Gid if he ate it in a way that one benefited from the eating. This is also the view of Avi Ezri (Avos ha'Tum'ah 1:7).
This being the case, if someone ate Gid Achilah Gasah he would not get Malkos (see Mishnah l'Melech Yesodei ha'Torah 5:8) although he may be considered to be transgressing an Isur d'Rabanan (see Mishnah l'Melech ibid.).
(b) The above is true for eating when a person is so full that the thought of eating more makes him feel sick. However, some Rishonim (see for example Tosfos Pesachim 107b) hold there is a level of eating that is also referred to as Achilah Gasah even though it is still considered Achilah for all Dinei Achilah. This is when a person feels full and does not feel an urge to eat. In such circumstances a person would be liable for eating Gid since this is considered an Achilah.
Dov Freedman
The Chavos Da'as holds that Ein b'Gidin b'Nosein Ta'am means only that the Ta'am is not powerful enough to cause other things to become Asur, for example if one cooked meat with Gid the meat would remain Heter, but the Gid itself does have taste. If so, Achila Gasah of Gid would certainly be no different than Achila Gasah of any other food.
Dov Freedman