跟讀練習: Why 350°F is the magic number for baking - 通過影片學習英語口語
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33 句
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You ever notice this instruction that’s in nearly every baking recipe?
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Preheating your oven to 350 degrees is sort of a basic requirement for baking in America.
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Our ovens even do it automatically as we turn them on, but have you ever stopped and asked yourself ...
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What’s so special about this number?
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I love to bake, but I’m certainly not a pastry chef, so let’s meet someone with a bit more experience.
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This is Michael Laiskonis, the creative director at the Institute of Culinary Education.
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He's a pastry chef.
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So temperature is really important in baking not only to develop color and flavor, but also to control the moisture in our products.
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As the temperature rises and moisture is lost at the surface, we get browning and also the creation of flavor compounds that didn't exist in that product previously.
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This happens because of a chemical process known as the maillard reaction, which occurs when proteins and sugars are transformed by heat and moisture.
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When sugar molecules are exposed to the heat in your oven they start to reduce – or break down – and interact with the proteins.
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That’s when you can see your pastry turning golden brown.
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But it’s not just about that physical transformation.
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You can taste the effects of the maillard reaction too – that's what gives us the flavors of the golden crust on a piece of bread or a nice sear on a steak or that mellow richness of, say, caramelized onions.
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The trick behind that reaction is to find the perfect temperature that sets it into action without over or under-doing it.
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These recipes might make you think that Maillard reaction occurs at 350 degrees, but actually ...
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So these Maillard reactions tend to occur at a fairly low temperature – around 230 to 240 degrees Fahrenheit.
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You want to manipulate the rate at which this reaction occurs both at the surface and internally to get the results you want.
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If we bake too cool, the entire cookie, for example, will dry out before we get that surface drying that will lead to browning.
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If we bake things in too hot an oven, the opposite occurs and we get burning.
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To get it just right we preheat the oven to 350 degrees so the Maillard reaction has time to occur throughout the entire cookie.
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For most home cooks and to also account for the fact that everyone's oven is slightly different, I think 350 is a great benchmark to work from.
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It’s a safe standard for most people, but the number can also be altered to yield slightly different results. Some pastry chefs might bake at 325 if they want a lighter colored cookie, and some push it to 375 for a crispier outside.
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A lot of things that contemporary bakers tend to forget is not too long ago, in history, we didn't have as much control over our ovens or being a pastry chef meant being able to build a fire and maintain an oven temperature.
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Before the 1900’s, when ovens didn’t have temperature regulators, recipe writers instructed bakers to “cook in a moderate” “hot” or “slow” oven depending on the food.
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After the second world war, the temperature gauge was developed and it became widely popular across households.
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Modern ovens typically ranged from 200 to 550 degrees, so over time, recipe writers converted these temperature guidelines to actual numbers -- they settled on the 350 mark for “moderate” which was the sweet spot for baking.
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Using these more specific numbers is really a result of better oven design and better oven control.
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And the more you understand about what goes on inside your oven, the better results you'll get.
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And who doesn't want a better cookie?
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Hey everyone, thanks for watching.
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If you're interested in more food content, head on over our sister channel Eater.
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They've got this cool series where they test out different kitchen gadgets and they recently put up a video on pressure cookers.
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推薦影片
本課的詞彙與口語要點
這段影片共有 33 個句子、650 個單詞可供跟讀。 講話部分時長為 3:31。 說話人語速較快,每分鐘約 185 個詞,會出現較多連讀和弱讀。 只有 79% 的單詞屬於英語最常用的 3,000 詞,詞彙難度較高。
影片中的重點詞彙
影片中 15 個不太常見的單詞,附發音和釋義:
- oven /ˈʌ.vn̩/ (名詞) — 烤爐 /烤爐, 爐 /爐. A chamber used for baking or heating.
- bake /beɪk/ (動詞) — 烤, 烘. To cook (something) in an oven (for someone).
- occur /əˈkɜː/ (動詞) — 發生 /發生. To happen or take place.
- pastry /ˈpeɪstɹi/ (名詞) — 糕點 /糕點, 點心 /點心. A baked food item made from flour and fat pastes such as pie crust; also tarts, bear claws, napoleons, puff pastries, etc.
- chef /ʃɛf/ (名詞) — 廚師 /廚師. The presiding cook in the kitchen of a large household.
- cookie /ˈkʊki/ (名詞) — 餅乾 /餅乾, 曲奇. A small, flat, baked good which is either crisp or soft but firm.
- flavor /ˈfleɪvə/ (名詞) — 味道, 味兒 /味兒. The quality produced by the sensation of taste or, especially, of taste and smell in combined effect.
- moisture /ˈmɔɪs.t͡ʃɚ/ (名詞) — 濕氣 /溼氣. That which moistens or makes damp or wet; exuding fluid; liquid in small quantity.
- moderate /ˈmɑdəɹət/ (形容詞) — 適中 /適中. Not excessive; acting in moderation.
- baker /ˈbeɪ.kɚ/ (名詞) — 麵包師傅 /麵包師傅. A person who bakes and sells bread, cakes and similar items.
- trick /ˈtɹɪk/ (名詞) — 詭計 /詭計, 騙術 /騙術. Something designed to fool, dupe, outsmart, mislead or swindle.
- requirement /ɹɪˈkwaɪɹmənt/ (名詞) — 要求, 需求. A necessity or prerequisite; something required or obligatory. Its adpositions are generally of in relation to who or what has given it, on in relation to whom…
- transformation /ˌtɹæns.fɔɹˈmeɪ.ʃən/ (名詞) — 轉型 /轉型, 轉變 /轉變. The act of transforming or the state of being transformed.
- depend /dɪˈpɛnd/ (動詞) — 信任, 信賴 /信賴. To be contingent or conditioned; to have something as a necessary condition
- compound /ˈkɑmpaʊnd/ (名詞) — 化合物. Anything made by combining several things.
影片中出現的短語動詞
- break down (動詞) — 壞了 /壞了, 出故障. To stop functioning.
需要注意的發音
說話人用了 8 次縮略和弱讀形式,例如 didn't, doesn't, I'm。請按聽到的簡短形式來說。
- “sh” 和 “zh” 音: chef /ʃɛf/, transformation /ˌtɹæns.fɔɹˈmeɪ.ʃən/, instruction /ɪnˈstɹʌkʃən/, benchmark /ˈbɛn(t)ʃmɑːk/
- 長單詞——注意重音位置: transformation /ˌtɹæns.fɔɹˈmeɪ.ʃən/, internally /ɪnˈtɜːnəli/, manipulate /məˈnɪp.jʊ.leɪt/, regulator /ˈɹɛɡ.ju.leɪ.tɚ/, caramelize /ˈkaɹ(ə)məlʌɪz/
如何用這段影片練習
- 先完整聽一遍影片,不要開口,記下不認識的單詞。
- 先用 0.75 倍速逐句跟讀,熟練之後再回到正常速度。
- 錄下自己的聲音並與原聲對比,特別注意 oven, bake, occur 這類單詞。
什麼是跟讀法?
跟讀法 (Shadowing) 是一種有科學依據的語言學習技巧,最初開發用於專業口譯員的培訓,並由多語言者Alexander Arguelles博士普及。這個方法簡單而強大:您在聽英語母語原聲的同時立即大聲重複——就像是一個延遲1-2秒緊跟說話者的影子。與被動聽力或語法練習不同,跟讀法強迫您的大腦和口腔肌肉同時處理並模模擬實的講話模式。研究表明它能顯著提高發音準確性,語調,節奏,連讀,聽力理解和口語流利度——使其成為雅思口語備考和真實英語交流最有效的方法之一。
































