My boy didn't like porridge at about 12 months old too.
Then I realize he wanted to try finger-feeding, so I used hands to feed him and let him do the same. Messy but he enjoyed it.
Then changed to soft rice, pasta, noodles, etc (cut into small pieces), or soupy rice / pasta.
I also gave him small bits of soft vegetables (carrots, corn, brocolli, etc) and fruits to feed himself while I feed him.
This is a good time to try new tastes and textures. Have fun!