erm, you need a pellet pump first off. You can use flavoured or just plain gelatine. You break it up and pour boilling water over the gelatine. You leave to stand for a little bit but not so it cannot be pured, it needs to be a liquid. Put your expanders in the pellet pump, then pour in the jelly, give a couple of pumps and bobs your uncle! One of its advantages is that they are still soft, but more rubberry, so do not fall of the hook as easy.
J.Tolley