推荐回答(4个)
首先鱼肉在加热过程中常常伴随着一些物质的溶出,溶出的物质中通常包括肉中的自由水分,还包括从肌纤维细胞中溶出的少量脂肪、肌浆蛋白、弹性蛋白等肌浆汁液以及由热溶性胶原蛋白形成的明胶溶出物。
汤汁产生乳白色的原因就是因为在熬或煮制过程中,肉所含的脂肪外溢,肌肉组织里的一些水溶性蛋白质和骨骼中的卵磷脂溶出,肉皮中的胶原蛋白水解成了明胶分子,同时,因为加热,汤汁会在锅内不断沸腾,沸腾会使脂肪组织被粉碎成了细小的微粒,而卵磷脂、明胶分子和一些具有乳化性能的蛋白质则担当起了乳化剂的重任,将微小的细粒稳定而均匀地分散在水里,进而形成了水包油的乳化液,这样就使得汤汁浓白如乳。
因此,鱼汤的乳白色主要是汤中的脂肪被乳化剂或可溶性蛋白质包裹,发生乳化作用悬浮在水中,散射后造成的光学效果。
影响乳白色的一个重要因素就是蛋白质和脂肪的浓度,特别与脂肪,通常脂肪含量越丰富,汤汁越容易熬煮成乳白色。传统做鱼肉白汤会过油,就会有更多的脂肪,这样鱼汤在煮制过程中,乳化更多,颜色就更白了
鱼是我们餐桌上经常出现的食材,营养价值特别高,是低热量低脂肪高蛋白的食物,平时我们家也经常做鱼吃,不论是红烧,清蒸,煮汤等,味道都是非常鲜美,下面我来分享一下怎么煮出奶白色的鱼汤的。
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我以鲫鱼为例,首先选择鱼是非常重要的,鱼最好选择野生活的鱼,其次煎鱼也是重要的一个环节,两个环节做好,这样做出来的鱼汤特别鲜美!
准备食材:野生鲫鱼,生姜,葱,料酒。
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1.将鱼清洗干净,生姜切丝,葱切段。
2.把锅处理好,锅烧的特别热,倒入食用油,将锅炙一下,让油滑遍锅四周,这样处理好的锅煎鱼就不会粘锅了。
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3.将鱼放入锅里,改小火慢煎,煎至一面金黄再翻至另一面,小火慢煎,煎至两面金黄,倒入料酒,生姜,葱。
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3.倒入足量开水,这一步也很重要,用开水鱼汤很快就会呈现出奶白色,中途千万不要加凉水,如果感觉水量不够,加开水。
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4.煮至汤汁浓白,撒上小葱花或者香菜,淋入两勺香油,一道鲜香美味的奶白色鱼汤成功上桌啦!
鱼一定要煎到两面金黄,煎到两面金黄再加热水,这样子煎出来的鲫鱼汤才会更加奶白浓郁,口感也更好喝。
鱼汤的白色一个是融入汤内的蛋白质形成,另一个是热油受到冷水击如,油被乳化形成白色。在做鱼汤是热锅加适当植物油煎鱼煎好后烹入冷水,使油乳化,汤即白色。
因为别人在煲鱼汤的过程中都加了一些水淀粉,所以就会使得鱼汤是奶白色的。味道非常好吃。
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