salonika, have you tried the restaurant near the road going up to the town hall that cooks to order a pork dish (forgot its name and components na). mega-sized serving and dirt cheap. not to mention that it leaves you woozy when you leave the resto.
I have to admit, I haven't tried any of the restaurants in Sablan since our house is less than a km from the town hall so I'd rather eat at home. That restaurant (Ignacia's) has been there since my childhood days, dami nang nainom at napulutan ni erpat dun.

Clarin's Restaurant
Tumpak! I wonder how much is the eat-all-you-can now.

Naguilian - carinderia in front of Petron, imbaliktad, igado, papaitan (do you have the exact address? baka makadagas kami intono agawid idiay ilocos. TY
There is only one carinderia near Petron (the one right before the town plaza going north, Petron nga ba yun o Caltex?). I'm not sure about the name but ask if it is owned by an Abenoja. If it is, yun na yun.

I remembered the name of the carinderia in San Fernando LU public market - NUVAL'S.