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    7/21/2006

    冰淇淋Custard做法

    做冰淇淋需要Custard做底。我的冰淇淋Custard做法如下:

    四個蛋黃加入糖及1/8 TeaspoonCorn Starch三者用Kitchenaid MixerWire Whip8的速度打4分鐘。

    用一小鍋將10 oz的牛奶加溫至接近燒滾。牛奶不要燒滾,因為牛奶燒滾時會迅速膨脹噗到鍋子外面。然後將接近燒滾的牛奶徐俆倒入打發的蛋黃//corn starch中,用Balloon Whisk攪勻。要徐徐倒,邊倒邊攪勻。不要倒得太快,否則就變成沖蛋花湯了。

    再將以上漿汁倒到一個小鍋中放到爐上以小火﹝英文是simmer﹞慢熬。邊熬就要邊Stir。注意火不能太大。也不能不Stir而跑去看連續劇。兩者缺一,Custard就會變成蛋花湯。不要懷疑,我就做過蛋花湯。

    一直熬到漿汁變得濃稠就大功告成。如果是做咖啡冰淇淋,這時就加咖啡粉溶解。如果是做巧克力冰淇淋,這時就倒入巧克力塊溶解。

    如果有人問,怎麼知道漿汁變得濃稠是麼時候?問的好!我看了許多食譜,都說用湯匙法來測試。也就是將湯匙插進漿汁裡面再拿起來,漿汁會黏在湯匙背不掉下來就可以了。我根據這準則試了幾次都不得要領。最後的到結論是要用目視法。當接近燒滾的牛奶徐俆倒入打發的蛋黃//corn starch中用Balloon Whisk攪勻時會在漿汁面產生許多白色小氣泡。熬呀熬的這些在表面的小氣泡就會突然消失,成為鵝黃色的漿汁。再加熬3分鐘就很濃稠了。

    將鍋蓋蓋住小鍋,不要使漿汁暴露在空氣中。冷卻至室溫後放入冰箱冷藏。接下來就可以做冰淇淋了。

    這裡的糖量約為2.5 oz細白砂糖。但因所作冰淇淋口味不同而有變化。比如說Rum Raisin冰淇淋這裡的糖就改成2.5 oz的黃砂糖。

    牛奶就是超市架上賣的全脂鮮奶。如果沒有全脂,2%的低脂也可以。反正冰淇淋所有料都已經夠肥了,差不了那1%

     也許有人對我加入的Corn Starch皺皺眉頭有意見。Corn Starch是一個很有效的穩定劑,熬Custard就不易有問題。有點像做蛋糕打蛋白霜時加入一點塔塔粉來穩定是一樣的。原食譜是要求1 Teaspoon Corn Starch ,經我試驗,1/8 Teaspoon就足夠了。如果做的夠熟練,Corn Starch就可省略

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