Broccoli is an edible green plant in the cabbage family whose large flowering head is eaten as a vegetable.
The word broccoli comes from the Italian plural of broccolo, which means “the flowering crest of a cabbage”, and is the diminutive form of brocco, meaning “small nail” or “sprout”.
Broccoli is often boiled or steamed but may be eaten raw.
It is classified in the Italica cultivar group of the species Brassica oleracea.
Broccoli has large flower heads, usually green in color, arranged in a tree-like structure branching out from a thick, edible stalk. (source)
So can hamsters eat cooked broccoli?
Yes they can in small amounts. However, the more solid it is the better.
As a result, stewed broccoli for example, is indigestible for them.