ok that wasn't the end the cat is eating the end of the last batch of yogurt its fine.
the end
it just tales 1 litre of milk in a stainless pot, warmed to near boiling for 5-8min stirring, a large tablespoon or two of live culture yogurt added to it - when the milk has cooled to around 43 degrees celsius, stir in the yogurt, wrap the pot with lid in a couple of towels leave for 12-24hrs
https://twetch.com/t/ea2360a2c16604b2ac685ed16430a9d08027ce2d7752640a9cebd69e122037f8