P'an Ch'un-ling of the Farmer's Association asserts that this has not always been the case, and attributes Matou's abundance rather to its peoples 'ability to make correct use of the land.
美豐瓜子行老闆江元財解釋：「炒瓜子的火要旺，瓜子殼才會酥脆；炭火可以加旺的程度比瓦斯、電爐等來得大，且成本較低。」