expression
this very thing; this precisely
Emphatic expression combining これ (this) with the particle こそ, which singles out the preceding word as exactly the thing being emphasized. Often used to highlight that something is the ideal or definitive example.
See also: こそ
これこそ私が探していた本です。
This is exactly the book I was looking for.
これこそ本物の日本料理だ。
This is truly authentic Japanese cuisine.