Panettone is an enriched bread that I've played with over time. This year I got the strange notion to try a white trash version in a brown paper lunch bag. Not because I wanted to make fun of a grand sweet bread, but I didn't have molds and my dough needed a place to proof and bake! I got a half way decent version with natural leavening, but I think the texture (more like a cake crumb) had some issues with a slow ferment and the white trash bag having not enough insulation. The bottoms certainly got a bit darker then I wanted!
So I went back to the drawing board with a tested formula I'd used and got molds, the real ones! And alas a decent airy panettone fit for the season!