A few minutes of judicious massaging will transform bitter mustard greens into a mellow, well-balanced salad spiked with hints of lemon, garlic and Parmesan.
Strip leaves from the stems (discard stems). Wash and dry the leaves. Tear the leaves into small pieces and place in a large bowl. Add Parmesan, oil, lemon juice, garlic, soy sauce, anchovy (if using), pepper and salt. With clean hands, firmly massage and crush the greens to work in the flavoring. Stop when the volume of greens is reduced by about half. The greens should look a little darker and somewhat shiny. Taste and adjust seasoning with more Parmesan, lemon juice, garlic, soy sauce and/or pepper, if desired.
