You're using it to line pans or steam on the grill. Maybe wrap some leftovers. Aluminum foil is purely utilitarian and pretty simple as far as "ingredients" go: It's the element aluminium, shaped into thin sheets.
Not all store brands are as strong as the name brands, but lots are. (After all, according to Consumer Credit Counseling services, the manufacturer of Reynolds Wrap also manufactures store brands.) And you can always upgrade to the heavy duty, which will probably still cost less than the brand-name regular. So try it. You'll probably find there's no need to splurge on this kitchen essential.
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