Hi - it's been a while, I don't seem to get to play much at the moment. Not surrendered my ambitions altogether though, and I have just begun a leaven which is now on day 5 and appears to be pleasantly active. Q. I understand about feeding a leaven to maintain it, and if necessary re-establishing a leaven that's been chilled for a while. What I'm not sure about is - can an active leaven ever become unsafe for use? As always, any additional thoughts/comments appropriate to wider subject are very welcome. Tks Andy.