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$
雪花糕/椰蓉奶凍 (Milk Jelly Cake)
每次提到雪花糕,都會讓我想起大學時騎著腳踏車穿越椰林大道,到活大的麵包店買一盒冰涼涼的長條狀雪花糕,然後在吃完後馬上後悔沒有多買一盒。直到開始下廚後,才發現雪花糕是個非常簡單又不會太不健康的甜點。在經歷過當年幾次慘烈的失敗之後,現在已經可以輕易地做出一盤活蹦亂跳的奶凍。
我做的雪花糕是以玉米澱粉作為凝固劑,這跟其他常見的吉利丁或是雞蛋有著本質的不同。首先口感上的確不如吉利丁的嫩還有雞蛋的滑,而製作上也不像吉利丁融化、雞蛋攪拌加熱就好。所以如果對食材有特殊偏好,是可以直接把玉米澱粉換成吉利丁或是魚膠粉,雞蛋可能就不太合適了。
玉米澱粉的操作上最需要的就是耐心,失敗通常發生於一不注意奶液就迅速凝固,然後就出現小焦塊了。從凝固的原理來看,澱粉類(包括太白粉)的凝固是靠糊化作用(Gelatinization),基本上就是透過高溫使得澱粉粒吸水膨脹,破壞了晶體結構,分裂成糊狀的液體。而這個過程是在很短的時間內突然發生的,因此容易一開始覺得什麼都沒發生,所以就偷懶少攪拌,結果突然開始凝固就來不及攪拌均勻了。所以一個小技巧是在初期讓溫度升快一點,此時還離凝固的溫度(75-85度C)很遠,所以不用太擔心。當溫度升到一定程度後,在開始不停攪拌,準備隨時到來的凝固瞬間。
食譜小抄
如同慣例,詳細的圖解食譜可以很容易地在其他地方找到,所以這邊只會提供proof sketch加上一些個人的變化。
食材:
- 玉米澱粉、糖、牛奶,1:(0.5~1):(8~10)
- 部分牛奶可以用椰奶替代
- 適量椰蓉
步驟:
- 除了椰蓉以外的食材全部混入鍋中。
- 中火煮並且不時攪拌。
- 當溫度到開始有點冒煙的階段時,將火轉小,並且勤加攪拌。
- 開始漸漸凝固時,不停地攪拌,且注意鍋子底部沒有焦掉。
- 當濃稠度接近融化起司的感覺時,關火然後倒入預先準備好的模具中(e.g., 保鮮盒)。
- 放冰箱3小時以上定型,然後到扣出切塊撒椰蓉。
- 拍照、吃!
雪花糕的簡史
雪花糕看似像西方的甜點,但其實是個非常經典的中式甜點,甚至擠身金瓶梅提到的31糕點的行列。不過「雪花糕」這個名字倒是常常被用來指完全不同的其他甜點,例如俗稱的甑子糕或雪花糖。而雪花糕在台灣的流行,則是從經典的同名老店「雪花齋」開始,一句「花香天下中秋桂,雪映窗前臘月梅」,讓我們彷彿從椰絲的飄逸中,感受到雪花紛飛的季節更迭,濃郁卻又清爽的乳香,更是承載了傳統庶民文化的簡單不朽。