This is one for the adults, but you can certainly use some of the components to put together a salad for the little ones too. The physalis (also known as cape gooseberry) is the superhero of the berry world. Closely related to the tomato and native to countries in Latin America, they are a good source of vitamin C, betacarotene, iron, calcium and trace amounts of B vitamins. Physalis and fruits of the same family, tomatillos and Chinese lanterns, contain 18 kinds of amino acids and all eight essential amino acids. Although red rice is not a typical Mexican ingredient, it adds a lovely texture and avour to this dish.