コーヒーに

in coffee

→ コーヒー
phrase Common #7,814
in coffee コーヒー means “coffee,” and に marks it as the place or drink something is put into. Depending on the verb, it can also mean “into coffee.”
JA: コーヒーに砂糖を入れてください。
EN: Please put sugar in the coffee.

コーヒーにちょっとだけシナモンを入れてみな

Try adding just a little cinnamon to your coffee.

コーヒーに何か入れますか

Would you like anything in your coffee?

彼女は間違ってコーヒーに塩を入れた

She accidentally put salt in her coffee.

彼はコーヒーに少し砂糖を加えた

He added a little sugar to his coffee.

コーヒーにどれぐらい砂糖がいるでしたっけ

How much sugar did you say you take in your coffee?

私のコーヒーに砂糖を入れないでください

Please don't put sugar in my coffee.

マルクワインを買いにコーヒーにワイン

Is Mark going to buy wine for coffee?

— 鶴は翔んでゆく (1957)

トムはよくコーヒーにシナモン入れてる

Tom often adds cinnamon to his coffee.

コーヒーに砂糖は入れる

Do you take sugar in your coffee?

彼女はコーヒーにミルクを入れてかき混ぜた

She added milk to her coffee and stirred it.

毎朝コーヒーに牛乳を入れて飲みます

Every morning, I drink coffee with milk in it.

コーヒーに遅いから

Because it's too late for coffee.

— デッド・ドント・ダイ (2019)

コーヒーにミルクを入れた

I added milk to my coffee.

彼はコーヒーにミルクを入れた

He added milk to his coffee.

コーヒーにどのぐらい砂糖が欲しいんだっけ

How much sugar did you want in your coffee again?

彼女はコーヒーにたくさん砂糖を入れた

She put a lot of sugar in her coffee.

彼は間違ってコーヒーに塩を入れた

He accidentally put salt in his coffee.

砂糖は熱いコーヒーに入れると溶ける

Sugar dissolves when added to hot coffee.

私はコーヒーにたくさんミルクを入れます

I put a lot of milk in my coffee.

コーヒーにミルクをたくさん入れて下さい

Please add lots of milk to the coffee.