I wonder how many of us brew OUTSIDE! I've read where some do and probably they are in warmer climates. Here, yesterday (mid January) it was just above freezing but what a great time I had. I'm lucky to have a very nice flat piece of Welsh Slate cost me £12 from the Gloddfa Ganol slate mine in Blanaeu Ffestiniog years ago, bought specially for a BBQ using old left over bricks. All clean after a wipe down and I was then ready to go... No need to worry about spillage, the rain will wash that away and there was some from the strainer bag that leaked while straining out hops from the mash machine into large stainless steel pot. There were grains both used and unused scattered around.... basically I just did not care! I was outside, birds will clear up and these, wifes feathered friends were loving the used grains... The smell outside was simply just wonderful, people walking past did have a curious peek. I reckon the amount of steam produced would have been terrible in our cold kitchen. These guys certainly appreciated a warm sweet meal. I was not sure if to let them eat the lot, missus was not so keen, what do you think?