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
Vegetable chip or deep-fried, chips may be prepared in a multi-stage process, starting with a dough made from cassava flour. The dough is steamed, thinly sliced, dried, and then fried in oil. This style of cassava flour chips is a popular food in India, Indonesia, Malaysia and the Philippines. Vegetable chips may be consumed as a snack food, and may be accompanied with various dips such as salsa, guacamole, and bean dips. They are also used as a topping for soups, salads and other dishes. In the United States, varieties of vegetable chips are mass-produced and purveyed in supermarkets. Brands of vegetable