Came back home. Thanks for all the great tips, now I have to go back real soon. Only stop I actually made was at La Plaza bakery in Gonzales. Got a couple tortas: carne asada with crema, chiles, and thin-sliced onions, and jamon con queso Mexicano. Ate 'em picnic-style aside Jolon Road, going out to Lake Nacimiento, and a bottle of pineapple soda. All right. This trip was a dash--next one is a browse.
(Note to self: re-read Chino Wayne's S.L.O. visit.)