By Carbuncle.Wulfshadow 2011-12-07 16:51:21
Synergy ingredients are returned, as stated previously, one at a time into your inventory.
If you put in 6 leaves which, although are stackable, will require you to have 6 spaces to take them all out.
Each individual item, regardless of stackability, will take up 1 space until the removal process is complete, where the game (given that you have the auto-sort feature on) will automatically stack them for you.