Rabbi, i just ordered lunch from a restaurant. They sent me bread on the side. I am not interested in eating this bread. What is the proper way to dispose of this according to the halaca and kaballah? I read the mishna berura today in siman 179. Hilchot perurei hapat. Still unclear what i should do, i can leave it in the pantry maybe a goy will take it or throw out , or wrap it in a bag and put in garbage

Wrap it in a bag and put it in the garbage, or put it in the sink and let the water run untill the bread disintegrates. It should not be fed to birds if you made a bracha on it. See shiur
Leftover bread