Spontaneous emulsification is generally accompanied with various spectacular dynamic effects such as the kicking and oscillation of pendant drops, twitching and sudden bursts of an interface, and rapid penetration of droplets in a liquid against gravity. These phenomena are now well-known and well documented in a plethora of publications . It has been realized over time that the hydrodynamic instabilities can develop at the interface that could originate from Marangoni instability due to local variation of interfacial tension at the interface. This may occur via spontaneous fluctuation of concentration , which, according to McBain et al , was first conceived by Quincke. The chemical potential gradients across the interface lead to mass transfer and a concomitant hydrodynamic instability , whereas an in-plane gradient of concentration can lead to Marangoni force induced hydrodynamic flow. Due to a resurgent interest in this field of research, new insightful papers have continued to be published even recently , whereas detailed accounts of the earlier research have been reviewed . As this particular article is not meant to be a review, here we summarize only the salient features of the related literatures.