Unless greens are cooked right they will taste bitter and strong with an unpleasant aftertaste. Greens like turnip, mustard, and collards have to be simmered with the right seasoning. If you buy large can of Seasoned turnip greens in a can and add a small can of unseasoned, simmer with beef or chicken stock they will be perfect. Fresh greens are really too much work to wash five times, destem and have wilt down to fit the pot. My grandmother always had turnip or collard greens growing or bought. She said they kept you healthy.