吃的：打進空氣的一道菜
直接就是核心：把材料打到蓬起來，冰過再吃。
noun · B1
A cold sweet dish made by mixing cream and eggs with a flavour such as chocolate or fruit, so that it becomes soft, light and full of air.
慕斯（甜點）
核心畫面
One picture covers the whole word: something beaten until it is full of tiny bubbles, so that it turns soft, light and able to hold a shape without being solid. The word came straight from French, where it means foam. Chocolate in a glass, salmon on toast, foam from a can worked into damp hair — the material changes every time, the air inside never does. If you can feel that lightness, you can tell which kind is meant just from what stands next to it.
整個字可以想成同一張圖：某樣東西被打到滿是細小的氣泡，於是變得軟、變得輕，撐得住形狀卻不硬。這個字是直接從法文搬來的…更多收起
整個字可以想成同一張圖：某樣東西被打到滿是細小的氣泡，於是變得軟、變得輕，撐得住形狀卻不硬。這個字是直接從法文搬來的，法文裡它就是「泡沫」。玻璃杯裡的巧克力、抹在吐司上的鮭魚、從罐子裡擠出來抓進濕頭髮的那坨白泡——每次換的是材料，沒換的是裡面那些空氣。只要抓得住那個「輕」，光看旁邊站著哪個字，就知道講的是哪一種。From the word’s history
From French mousse ('foam, froth'), from Old French mosse ('moss'), from a Germanic word for moss and bog. The foam is not a later image laid on the word; it is what the word meant when English borrowed it.
來自法文 mousse（泡沫），再往前是古法文 mosse（苔），源頭是日耳曼語系表示苔、濕地的字。所以「泡沫」不是後來加上去的想像，而是英文借這個字進來的時候，它本來就有的意思。
Wiktionary (kaikki extract, source_ref kaikki:3f6f69a190036ae4:1113414260:12851), 'mousse' etymology
Two branches
抹在頭髮上的那坨泡沫
還是同一張圖，只是這次裝滿氣泡的東西從碗裡搬到了頭上：一樣輕、一樣蓬、一樣撐得住形狀。
noun · B1
A light, foamy substance full of tiny bubbles that you put in your hair to make it look thicker or to hold a style in place.
慕斯（美髮用的泡沫）