Toffee Pecan Panettone

With Callebaut Gold and white chocolate.
This is the highest-rise panettone I've baked yet, due in part to some changes in the way I'm maintaining the lievito madre, and some alterations I'm making to the recipe to improve the first impasto.
The crumb is soft, moist, lofty, shreddable. There is no trace of acidity, or of toughness, dryness or other common problems. The flavor comes from 1. mellow complexity from the 12-hour rise on first impasto (which tripled in exactly 12 hours at 22-24C), the Vanilla, toffee, pecans, and chocolate.