Taiwan grows extraordinary fruit and sells it at night markets cut to order, chilled, on a plate with a toothpick. This stand on Ningxia Road does wax apples, mangosteen, guava and whatever is in season, plus pressed juice. Ask for the ginger-and-tomato plate if it is offered — sliced tomato served with a ginger-soy-liquorice dip is a Taiwanese pairing that sounds alarming and converts people.