Survivalcraft more food is a new addon than adds new food variants, harvest, nuggets and a new mob. Actually the rice has a bug than drops a bug item, invisible and no texture.
1.- Go to the end of the submission and click in the mcaddon, archive
2.- Export mcaddon archive to minecraft
3.-Wait the exportation
4.-Active the resource and behavior packs
5.-Active the experimental options
6.-Go to play the addon in your world