what the doctor ordered

just what the doctor ordered (exactly what is needed or required, especially for health or comfort) — то, что доктор прописал; как раз то, что нужно; то, что надо; самое то

Example 1: This steak is just what the doctor ordered. (The American Heritage Dictionary of Idioms by Christine Ammer)

Example 2: You've been a great help in our office—just what the doctor ordered. (The American Heritage Dictionary of Idioms by Christine Ammer)

Related vocabulary:
[just the ticket]
[fit the bill]
[A1]
[bee's knees]
hit a nail on the head
[hit the bull's eye]
[попасть в самую точку]