A mirage is an atmospheric optical phenomenon caused by refraction of light due to differences in air density. The density difference between water and aqueous solutions such as sugar water can be used to reproduce the same conditions under which a mirage occurs. Recently, there has been some interests in edible optical elements. In this paper, we propose a prototype of an edible jelly for demonstrating an artificial mirage for use as an educational material and for regional promotion. First, the refractive indices of sugar water and gelatin are measured. The optical rays of the mirage jelly are also traced. The mirage jellies were prepared by changing the sugar concentrations in the upper and lower layers to approximately 10% and 20%, respectively. A 10% difference in concentration between the upper and lower layers yields a refractive index difference of approximately 0.01. The experiment confirmed that the mirage could be sufficiently observed even when the refractive index difference between the upper and lower layers was 0.01.