Cover greens with water; add butter and bring to a boil; add salt. Reduce heat & cook until vegetables are tender; drain. Place diced bread or croutons in serving bowl and cover with cooked greens.
Wortes were vegetable greens and members of the onion family, such as cabbage leaves, spinach, beet greens, leeks, etc., as well as the plants used for seasonings and spices: borage, parsley, sage, and so forth.