Sorry, last night on my initial post I had forgotten that there is more to the Nuvola than just the damaged starch level that helps Nuvola to brown like a malted/enzyme enriched flour. It is this.....
The new flour is called Nuvola (Italian for "cloud"). To harvest it, the combines aren't sent into fields until rainy season, late in the game, so the grains are very mature and rustic, almost aged. Antimo Caputo, the third-generation CEO of the flour producer, likens it to passito, a raisin wine. The chemical effect, he said, is that the grain is higher in fiber, with more bran, minerals, germ, protein and amylase, a sugar enzyme that allows a crème brûlée sense of character, deeply charred but not bitter.
The falling number spec can be an indication of damaged starch levels