Renovating solar cooker

I have a 30 years old solar cooker made out of wood, glass and insulation and lined with metal sheeting painted black. It still works wonderfully but the metal sheeting needs repainting. Does anybody have any suggestions for a food-safe paint? Here is a picture of a new model. (Mine doesn't look like this anymore)😅

Most folks on the forum would use milk paint and make it themselves.

Black might be a challenge so i found this:

https://www.realmilkpaint.com/shop/colors/53-black-iron/

Anne Miller wrote:Most folks on the forum would use milk paint and make it themselves.

Black might be a challenge so i found this:

https://www.realmilkpaint.com/shop/colors/53-black-iron/

Thank you for the tip. I wonder if milk paint is soluble in water as water sometimes condenses in the cooker?

Milk paint can be used as an exterior paint.  The exterior paints are specially formulated.

https://www.realmilkpaint.com/shop/additives/outdoor/

Will milk paint stick to steel?.... without an oil based primer? ....in a high heat environment?
If you strip the steel bare, accelerate the rust process with some sodium chloride salt water, rinse a bit, dry, then treat it with food safe phosphoric acid.....
The result while not deep black, will be an inert permanent dark grey. Like phosphated black machine bolts.  You may not be happy with the result, it won't have the even, deep finish of a proper enamel, but it will be chemically bonded, not topically applied.
Just different.

Tommy Bolin wrote:Will milk paint stick to steel?.... without an oil based primer? ....in a high heat environment?
If you strip the steel bare, accelerate the rust process with some sodium chloride salt water, rinse a bit, dry, then treat it with food safe phosphoric acid.....
The result while not deep black, will be an inert permanent dark grey. Like phosphated black machine bolts.  You may not be happy with the result, it won't have the even, deep finish of a proper enamel, but it will be chemically bonded, not topically applied.
Just different.

Thank you very much for your tips. 🙏🏻