I have a foil sheet on my lower oven rack to protect against spills onto the heating element. Lately, I've been thinking that this is affecting my baking. Is this a possiblity or likely just in my head?
Grilling in aluminum foil packages is a practical riff on the French technique en papillote, where ingredients are wrapped in parchment paper and baked. The food steams, making it tender and flavorful.