Krusty meat means should've been fresher/refrigerated, not a goal of article...
"Here's why this works: Typically, the dark sides of your grill will pull heat away from the heat source and absorb it"
No, typically you preheat the damn thing (benefits food & heat helps clean too)
& FOIL BURNS EASY & BREAKS DOWN WHEN OVERHEAT
(when it is brittle that means you're breathing in & eating it's former resilience)