Yeah have been keeping my eye on this too, especially that article that claimed up to 28% in food prices.....
For the record how you perceive inflation can depend on how you define it and what economic school of thought you follow... for instance Austrian economists do not define inflation as simply an increase in prices (such as conventional wisdom) rather they define it as an increase in the money supply, which can and will (though not necessarily immediately) cause an increase in prices, and when it does show up, it won’t all display across the CPI either, sometimes just in one area like housing or shares.
Monetarists tend to perceive it as being primarily the cause of monetary policy. Milton Friedman’s famous quote for instance (which I don’t personally ascribe to) is that inflation is "always and everywhere a monetary phenomenon"
Proto-Keynesians' perceive it as having causes primarily in changing demand within an economy
I however tend to perceive inflation (and I define it as an increase in prices) as having multiple causes, of which the money supply is only one factor (a powerful and often domineering factor but not the only) along with of course “demand pull†and “force push†causation.
In this instance I have this vague chart in my head which I have ascribed various aspects rising prices, percentages of potential causes.
EG:
Fuel prices are rising due to increased world demand for oil, due partly to a commodity/investment boom which is a hangover from the sub prime meltdowns ongoing effects. On top of presently existing and constantly increasing (in the case of China) demand from the worlds different countries which is most certainly causing a supply shock or force push inflation on food prices here in NZ.
Rent is due to high interest rates/expensive mortgages, causing asset holders to increase their charges.
Diary is increasing partly due to Fontera having market power, increasing world demand and a shortage of supply of diary, also higher transportation costs from fuel prices.
I see inflation as having multiple causes which forces are operating asynchronously... of which in this case specifically a few different forces and their results have spiked simultaneously and seemed like they may have had one initial cause, but are in fact from multiple areas.
I hope that dribble made sense, I couldn't think of a better way to construe that at this hour...