 The study presents the development of eutectugils with enhanced properties and functionalities by incorporating cellulose nanocrystals, CNC, bearing OS03H or COOH groups, which results in transient ionic conductors with high stretchability and excellent chemical and thermal stability. The eutectigal nanocomposite containing 1.0 weight percent COOH demonstrates enhanced stretchability, 375 percent, and ionic conductivity, 3.0 mscm-1, compared to the pristine gelatin-based eutectigal, and also exhibits birefringence when stretched, expanding their applications to new areas such as transient multi-responsive strain sensors for wearable electronics and multifunctional substrates for soft robotics. This article was authored by Saul Carasco-Savedra, Nicholas Artangi, Iván Garcia Nieto, and others.