They don't include groceries or fuel in the inflation calculations, so the term lying is appropriate and accurate!
The price on jars skyrocketed when the supply chain dried up. Part was scared people buying everything they could find, but mostly it was caused by foreign manufacturing with the travel problems inherent in that process.
Once a country stops manufacturing products, their supply chain will never truly recover. Enhanced production to help the supply chain stabilize is no longer possible, so it is a self fulfilling problem!