牛乳, 豆乳, and 乳製品: Drinks and dairy products made with milk
Compare milk and soy milk as drink names with dairy products made using milk. Read 牛乳 as the ingredient and 乳製品 as the product category.
Milk as a drink or ingredient
牛乳 means milk. 「朝食に温かい牛乳を一杯飲んだ。」 reports drinking a glass of warm milk with breakfast. It names the drink consumed.
「小麦粉に牛乳を少しずつ加えて混ぜる。」 has the English wording “Add the milk to the flour a little at a time and mix.” The imperative uses 牛乳 as the ingredient added; the name itself supplies no precise mixing quantity.
Soy milk as a distinct drink
豆乳 means soy milk. 「朝食に温めた豆乳を一杯飲んだ。」 reports drinking a cup of warm soy milk for breakfast. The drink’s name differs from 牛乳.
「牛乳の代わりに豆乳を使ってスープを作った。」 reports making soup with soy milk instead of dairy milk. It states a substitution in that soup, rather than suitability for every recipe.
Products made with milk
乳製品 means a dairy product. 「この店では地域の牛乳を使った乳製品を売っている。」 says the shop sells dairy products made with local milk. 牛乳 names the milk used as an ingredient, while 乳製品 names the products.
「買い物の前に乳製品の在庫を確認した。」 reports checking the supply of dairy products before grocery shopping. The product category is stated; checking supplies does not report completed purchasing.
In 地域の牛乳を使った乳製品, which names the ingredient and which names the product?
Show the answer and why
牛乳 names the milk used as an ingredient, while 乳製品 names the dairy products made using it. Distinguish the ingredient from the product category.