What is the healthiest type of inflation?

Central Banks try to maintain an inflation of around 2% to 3%. As per economists, maintaining a moderate level of inflation is good for the economy of the country. You can read about Inflation in Economy- Types of Inflation, Inflation Remedies, Effect of Inflation in the given link.

Further readings:

1. Indian Economy Notes for UPSC Civil Service Exam
2. Monetary Policy – Objectives, Monetary Policy Committee, Instruments of Monetary Policy