Sourdough starter gone mad!
Started a new starter about 5 or so days ago put a bit of fruit juice (mix of grape/apple from a tub of fruit in unsweetened juice) in with some white flour and water and did the usual flour-only feeding. I saw a 'false-start' during this period that I've seen mentioned, but then it started it's proper action, and the smell of it has really started to develop.
2 days ago put some rye and half a teaspoon of honey in. Then yesterday evening put wholemeal in (and nothing else). It was in a 500ml pyrex jug, and 1/2 to 3/5 full, but after a couple of hours it was almost overflowing, so had to move it into a larger container. It's been warm here this last week so that's obviously helped but I was amazed.