It was made by combining a blue charm with 102 spirit shards and a Bronze bar. This required 36 Summoning and gave no experience. The unfinished pouch could then be infused at a summoning obelisk to make the Bronze minotaur pouch, giving 316.8 Summoning experience. Any leftover uncharged pouches may still be converted in experience. Clicking one in your inventory prompts a warning message saying: "this item no longer has use. Convert it and claim the xp contained within?". Choosing 'Yes' will convert all pouches in your inventory into 316.8 summoning experience each.