シャドーイング練習: Science hacks for crispy snacks - 動画で英語スピーキングを学ぶ
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If you aren't getting that sound in your own kitchen, pull up a stool.
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Because we are breaking down the science of crispy.
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This is Minute Food.
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There is nothing more disappointing than a limp spring roll or a soft french fry.
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Crispiness makes or breaks these foods.
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But in order to achieve crispy, you need to understand what it is.
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Scientists test and quantify crispiness in all sorts of ways.
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But it pretty much comes down to how loudly a food fractures.
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There's disagreement about how different crispiness is from crunchiness, and we can debate that somewhere else.
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But here, I'm going with crispy.
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Anyway, there are two main qualities that make food more likely to do that loud, fracture-y thing we love so much.
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The first is that the food, at least the surface of the food, has been dehydrated.
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It's dried out.
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And the second quality is that it's porous.
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There's some space inside.
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If you want to get ultimate crispiness at home, you need to consider and maximize these qualities.
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Now, crispy foods can take lots of different forms.
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I mean, here's a tiny subset of the crispy-liciousness out there.
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But most often, they're fried, like my go-to guilty pleasure, fried pickles.
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There's a reason we associate fried stuff with crispiness.
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See, when you drop your food in hot oil, the bubbles that erupt from the food aren't the oil boiling.
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They're moisture in the food that's gotten so hot that it vaporizes and escapes.
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And as it escapes, it creates tunnels and pockets and crevices.
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So with each bubble, you're dehydrating the surface of the food and creating spaces.
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The two crisp-making qualities.
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This is why frying is so good at making stuff crispy.
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Or why it can be if you keep those crisp-making qualities in mind.
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Like, say you're using batter.
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Use it to boost that airspace.
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You can add a leavener, like baking powder, or even some frothy beer to help form a network of beautiful airy bubbles.
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And while we're talking booze, throw a little vodka in your batter too.
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Alcohol is really volatile and will basically explode when it heats up, leaving behind big airy spaces.
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If you're on team breading, choose large irregular shapes like panko.
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Those flakes will form a big loose complex, giving you tons of nooks, crannies, and spaces.
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And panko itself is full of nooks, crannies, and spaces, compounding its airiness.
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Now once you're ready to fry, come in hot.
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Because hot oil makes water evaporate more quickly, dehydrating the food more efficiently and creating more and larger air spaces.
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So wait until your oil is nice and hot.
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Use a pan that holds heat well, like cast iron.
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That way the temp won't drop too much when you add the food.
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And don't crowd the pan.
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Fry in small batches.
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And if you've ever noticed that your second batch is crispier than your first, you're onto something.
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As you use oil, it breaks down and creates surfactants.
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Essentially, molecules that help oil make better contact with food.
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And more contact with food means more dehydration and more airy spaces.
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So you'll actually get crispier food with oil that's already been used.
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Up to a point.
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Food that's been used too many times, say six or so, will have too many surfactants.
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Food will get too dried out.
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At that point, get rid of the oil.
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But save a little bit to break in your new oil.
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About a tablespoon of old stuff per cup of new stuff will help replicate that second batch sweet spot.
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Now your food is cooked.
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But your quest for crispiness isn't over.
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Almost immediately, moisture inside the food will start creeping outside, rehydrating that surface you worked so hard to dehydrate.
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That's one reason lots of restaurants fry their foods twice.
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A second bath in hot oil removes additional moisture and adds even more air space, doubling down on crispiness.
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If you've got the time at home, a double fry is worth a try.
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Alternatively, until you're ready to serve, put the food on a metal rack in a low oven to drive away any of that creeping moisture.
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That's assuming you can actually wait.
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Because by maximizing these crisp-making qualities, you're going to have some gloriously loud, fracture-y food.
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Of course, crispiness isn't the only thing that makes fried food awesome.
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And maybe we'll chew on some of the other important stuff another time.
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But for now, I'm gonna go eat these pickles.
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Mmm. So good.
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When we make minute food videos, we spend a lot of time making sure we're representing stuff in a way that clearly conveys what's important.
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Like here we wanted to focus on the bonds within molecules, but here we wanted to emphasize structural similarity.
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So we chose to represent the molecules in different ways.
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The folks at our sister channel, MinuteEarth, have actually spent lots of time thinking about molecular representations, so much that they created an entire course about it over at Brilliant.
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In this course, like all the other great courses at Brilliant, you can learn interactively at your own pace in a low-pressure environment.
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is my first stop when I'm working on a video and need to get up to speed on new concepts.
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You can get started there for free.
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Just visit brilliant.org slash minute food or click on the link in the description.
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The first 200 of you will get 20% off Brilliant's annual premium subscription.
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And make sure to check out the awesome molecules course.
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It'll change how you think about chemistry.
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このレッスンの語彙とスピーキングのポイント
このB2レベルのスピーキングレッスンは、動画「Science hacks for crispy snacks」を教材にしています。 繰り返し出てくる語は次のとおりです：oil, crispiness, space, crispy, hot。 この動画には、シャドーイング用の文が77文、単語が942語あります。 音声の長さは5:09です。 話す速さは速く、1分あたり約183語です。音のつながりや弱く発音される音が多くなります。 英語の頻出3,000語に含まれる単語は78%だけなので、語彙は難しめです。
この動画の重要語彙
動画の中で特に難しい単語15語を、発音と意味つきで紹介します。
| 単語 | 発音 | 意味 |
|---|---|---|
| fry 動詞 | /fɹaɪ/ | (油で)揚げる, 炒る |
| dehydrate 動詞 | /diːhaɪˈdɹeɪt/ | 脱水する |
| molecule 名詞 | /ˈmɑ.lɪ.kjul/ | 分子 |
| moisture 名詞 | /ˈmɔɪs.t͡ʃɚ/ | 湿気 |
| fracture 名詞 | /ˈfɹæk.t͡ʃʰəː/ | 骨折 |
| batch 名詞 | /bæt͡ʃ/ | ひと焼き分 |
| bubble 名詞 | /ˈbʌbəl/ | 泡 |
| nook 名詞 | /nʊk/ | 隅, 片隅 |
| pickle 名詞 | /ˈpɪkəl/ | 酢漬け |
| surfactant 名詞 | /səɹˈfæktənt/ | 界面活性剤 |
| maximize 動詞 | /ˈmæksəmaɪz/ | 最大化する |
| creep 動詞 | /kɹiːp/ | 這う, 伝う |
| airspace 名詞 | 領空 | |
| crevice 名詞 | /ˈkɹɛvɪs/ | 亀裂 |
| dehydration 名詞 | /dihaɪˈdɹeɪʃən/ | 脱水 |
動画に出てくる句動詞
| 単語 | 発音 | 意味 |
|---|---|---|
| check out 動詞 | 試験する, 検査する | |
| drive away 動詞 | 退ける, 追い遣る | |
| get off 動詞 | 降りる | |
| leave behind 動詞 | 置き忘れる | |
| pull up 動詞 | /ˌpʊl ˈʌp/ | 引き上げる |
この動画の文法
話し手がよく使っている文型を、動画の実際の表現とともに紹介します。
| 文型 | 動画での表現 |
|---|---|
| 現在完了形 have/has + 過去分詞 — 過去の出来事が今も関係している | has been dehydrated · you've ever noticed · that's already been |
| 受動態 be + 過去分詞 — 誰がするかより、何が起きるかに焦点を当てる | has been dehydrated · is cooked |
注意したい発音
話し手はyou're, I'm, aren'tなど、短縮形や弱形を26回使っています。聞こえたとおりの短い形で発音しましょう。
- 「sh」と「zh」の音: dehydration /dihaɪˈdɹeɪʃən/, subscription /səbˈskɹɪpʃən/, structural /ˈstɹʌk(t͡)ʃəɹəl/
- 長い単語（アクセントの位置に注意）: dehydration /dihaɪˈdɹeɪʃən/, evaporate /ɪˈvæp.ə.ɹeɪt/, similarity /ˌsɪm.ɪˈlæɹ.ɪ.ti/, disagreement /dɪsəˈɡɹiːmənt/, irregular /ɪˈɹɛɡ.jə.lɚ/
日本語話者が苦手な音：
- /r/ と /l/ の区別 — /l/ は舌先を歯茎につけ、/r/ はどこにもつけない: replicate /ˈɹɛplɪkeɪt/, similarity /ˌsɪm.ɪˈlæɹ.ɪ.ti/, irregular /ɪˈɹɛɡ.jə.lɚ/, molecular /məˈlɛk.jə.ləɹ/, structural /ˈstɹʌk(t͡)ʃəɹəl/
- /v/ — /b/ にならないように、上の歯を下唇に当てる: crevice /ˈkɹɛvɪs/, evaporate /ɪˈvæp.ə.ɹeɪt/, volatile /ˈvɑ.lə.təl/, alternatively /ɔlˈtɝ.nə.tɪv.li/, vodka /ˈvɑdkə/
- /f/ — 「フ」ではなく、上の歯と下唇で出す: fry /fɹaɪ/, fracture /ˈfɹæk.t͡ʃʰəː/, surfactant /səɹˈfæktənt/, quantify /ˈkwɑn.tɪˌfaɪ/, emphasize /ˈɛm.fə.saɪz/
この動画での練習方法
- まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
- まず0.75倍速で一文ずつシャドーイングし、慣れてきたら通常の速度に戻します。
- 自分の声を録音して元の音声と比べます。fry, dehydrate, moleculeなどの単語に特に注意しましょう。
シャドーイングとは？英語上達に効果的な理由
シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。