研究團隊發現義大利麵條達到 al dente 前,其周長與長度分別的膨脹率相比,所得的比率是3.5比1。一旦超過了,就會軟爛。[2]此外,由於麵條煮愈久,離水時彼此相黏的部份就愈長。研究團隊認為,專業廚師也可以測量相黏長度,來推論起鍋時間,以後再將成熟的技術,推廣至普通民家…[3](原文口氣意外地認真。)總之,要知道煮好沒,不是用嘴試吃,也別拿錶計時,科學家的建議竟是用尺測量!
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煮麵的鹽和光
明明義大利麵條的包裝上,都有建議的烹煮時間。為什麼科學家不直接告訴大家,煮多久能起鍋?原來如果照正常的煮法,在水中加食鹽,麵條的化學和力學特性都會起變化。比起用蒸餾水,鹽水不僅有助麵條膨脹,而且會增添嚼勁。[3]此外,Sameh Tawfick 副教授解釋,滾水中的鹽量,會改變達到 al dente 所需的時間。有鑑於此,他未來要探討食鹽,在義大利麵膨脹時所扮演的角色。[2]同時,這個研究正如一道照亮前程的光,或許會引領其他人,也來嘗試用簡單的方式,研究軟物質的特性。
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