How to make a jug with solar cooking function !! (Transform Solar Cooker)

A few years ago, when I saw this jug at the restaurant, I thought that I wanted to add the capability to cook with sunlight without losing the function of this jug.
I wanted to make something that usually it can be used as a high thermal insulation jug, and can be used as a cooking item during camping or power outages too.
In the case of a typical solar cooker, when it is not sunny, it becomes a figurine that only occupies a place that has lost the function.
In addition, ordinary solar cookers often have problems in terms of size, weight, assembly time, and maintainability.
Therefore, I tried to make this with the aim of to eliminate that problem.

In this video's URL (My Science Channel)

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