If you thought comfrey tea smelt bad, try nettle tea. Not nettle tea that you'd buy in the shops, this one's a plant food. We used the nettles that had sprung up over the summer in our raised beds at St Chrysostom's and soaked them in water for a week. Then it was just a matter of decanting it into a bottle. While it's brewing keep it well away from anyone as it really does stink.
You can then dilute this and use it for a plant feed. Put the left over leaves into the compost.
Children called it Stinky Stew but assured me they hadn't named it after me.
A year ago we put leaves in plastic bags at St Chrysostom's and we got them out today. They'd rotted down very nicely and we spread them on the raspberries for a nice mulch over the winter. Children really enjoyed seeing how they'd changed.
Really easy to do, just make sure water can get into the bags, making leaf mould is a wet process whereas compost is best kept dry.