Bruce - You know how to 'lube' someone- I am assuming you are talking about the "plastic drink cups technique". As I said Phil and I do, BUT we are having problems finding the right plastic for him, other than the drink cups (which are not in wide use here). There were heaps of posts on this,(drink cups). I am just thinking, what I have used (various yogurt containers) and what is available there, may be entirely different, i.e, U.S recycle codes, standards for food containers etc (do you eat yogurt in U.S?), this is why I have never posted anything on it - but if everything lines up, no problem. pete