The Brussels sprouts are prepared from the whole auxiliary buds of the plants complying with the characteristics of the species:
> Brassica oleracea gemmifera (DC) O.E. Schulz.
The Brussels sprouts are size-graded:
Product in the direction of the smallest width of the bud, 80 % in number of the sprouts has the announced size (in mm). The size of Brussels sprouts is measured with a vernier calliper on the thawed perpendicular to its axe.