Brassicaceae greens, Savoy, kohlrabi, and gai lan ("Brassica oleracea"), turnip, napa cabbage, bomdong, bok choy and rapini ("Brassica rapa"), rocket salad/arugula ("Eruca sativa"), garden cress ("Lepidium sativum"), watercress ("Nasturtium officinale") and radish ("Raphanus") and a few spices like horseradish ("Armoracia rusticana"), "Brassica", wasabi ("Eutrema japonicum"), white, Indian and black mustard ("Sinapis alba", "Brassica juncea" and "B. nigra" respectively). Vegetable oil is produced from the seeds of several species such as "Brassica napus" (rapeseed oil), perhaps providing the largest volume of vegetable oils of any species. Woad ("Isatis tinctoria") was used in the past to produce a blue textile dye (indigo), but
Ketchup as a vegetable as a vegetable", while a December "New York Times" piece from that same year noted that "ketchup, of course was never mentioned in the proposals, which were designed to give local school officials more flexibility in planning their meals." Administrator Hoagland elaborated on the media field day that resulted from the ketchup controversy, stating "it's an insult to me and to school lunchroom officials to say that we would even consider forcing kids to eat ketchup as a vegetable." Despite the fact that ketchup was not explicitly referenced as a vegetable substitute in the regulations, the condiment became an easy