Smart shoppers know that when we're in season the sweetest ones among us have thick skins and protruding bellybuttons (bases), but that when we've been stored the ones to look for have thin, glossy skins and flat stomachs. The reason they store us is supply and demand.
至於太太、小姐上市場挑橘子，如果是時鮮貨則選擇果皮粗糙，果基（蒂端）微凸的較甜；如果已過產季，那上市的便是經貯藏的橘子，這時便要選皮細光滑、果形扁圓，而果基平平的才會多汁，這是卓蘭鎮農會推廣股張宏政種橘多年的相橘術。