Several months ago I wrote Heineken about using theior cans as cooking pots. This was their reply:

"Thank you for making Heineken aware of the use of our cans in a nontraditional manner. According to our packaging engineers, the inner lacquer coating of beverage cans are not intended to be used at high temperatures. The specific coating in our beer cans is suited for contact with beer only at pasteurizing temperature, which is well below cooking temperature. We will be contacting this company directly but wanted to
share with you our instruction that Heineken cans should be recycled and not re-used.

Regards,

Consumer Affairs - Heineken USA
Enjoy Heineken Responsibly

Please reply to heineken@qualitycustomercare.com"

That killed it for me. ALL beer or food cans are coated BTW.
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We don't stop hiking because we grow old, we grow old because we stop hiking. Finis Mitchell