In this paper, we propose an edible lens made from foodstuffs. The optical lens is used for forming an optical system. It is expected that it will be possible to make optical systems edible by preparing an edible lens that has the same function as the conventional optical lens. In order to realize this, prototypes of edible lens made of agar were developed, because the agar had been reported as a material to form edible retroreflector materials. Furthermore, we investigated its optical performance.