Braised broccolini with mozzarellaMarco Del GrandeWhen buying broccolini,look for a glossy,deep green colour. If the stalks are yellowing or excessively dry,cracked or curling at the base,you can be sure they are old. A yellow flower or two in the head is nothing to worry about. It can be stored for well over a week in the refrigerator,wrapped in a damp cloth.