It certainly wasn’t regular food that waited for him at the front of the Refectory. Steaming stone cauldrons along one side held an assortment of bizarre-looking food: stewed purple tubers, greens so dark they were almost black, fuzzy lichen, and a red speckled mushroom cap as large as a pizza and sliced up like a pie …. Tamara was already putting a scoop of the green stuff onto her plate. Aaron, however, was staring at the selection with the same expression of horror that Call felt.
The Iron Trial (Magisterium, #1)
Holly Black & Cassandra Clare