Provided is a removable grip device for a pot for cooking food, said removable grip device comprising a grip body, attachment means that can be connected to the cooking pot and disconnected therefrom, and an electrical energy source. In particular, the respective contact spot of electron donor and electron acceptor is a permanent contact spot for mediating the charge transport across a permanent chemical bond, the contact spot respectively comprising one of the binding partners of the chemical bond. Antimicrobial proteins isolated from Amaranthus, Capsicum, Briza and related species are provided. The primary device passes messages from the secondary devices to the remote host transparently.