To break nuts with a slice of bread, first, place the nuts on a sturdy, flat surface. Lay the slice of bread on top of the nuts to act as a cushion, preventing the nuts from scattering and reducing the risk of damaging the surface or injuring yourself. Use a hammer or another heavy object to gently tap on the bread-covered nuts. The pressure from the hammer will break the nuts' shells, while the bread absorbs the impact, ensuring the nuts stay in place. Remove the bread and carefully extract the nut pieces from the cracked shells.