Oxford dictionary define a commodity as 'A useful or valuable thing'. Another definition they put out there is 'A raw material or primary agricultural product that can be bought and sold, such as copper or coffee'. Whichever way you look at it, be that a useful and valuable thing, or indeed a basic product, Commodities have found their way into many many pension and investment portfolios.Apparently as many as 4,000 years ago our Neolithic ancestors here in Ireland made use of cattle, for food, leather and indeed milk. Many of you reading this may never have milked a cow, however you may well own a very tiny portion of a fund which tracks the price of those fine animals!Chances are, if you are a member of a company pension scheme, or have some spare money invested, you are investing in Commodities, whether you know it or not! As strange as it may sound cattle prices are frequently an aspect of Commodities in investment terms, so you could well have an active interest here!We are going to look at the pros and cons and alternatives to investing in Commodities, either as a lump sum investor or a pension investor here in Ireland.Check out the full blog version at www.informeddecisions.ie