> I'm afraid it seems that that was how they heated the water in
> 'cooking pits'. Cf Fergus Kelly, 'Early Irish Farming' 336. You
> can't light a fire under a pit, but you can light one under a
But let's just suppose that the 'superheated rock' you put in a cooking
pit could be called a 'bruth' (just like a mass of heated metal can be).
And suppose instead of dropping one into a great big cooking pit you
dropped it into the much smaller volume of liquid in an 'airdech'.
This disproportional action act would have alarming consequences. A
Could this be the basis of our proverb?
(And should I stop now and let someone else have a go?)