The Tallow golem, is an additional Golem added by Thaumcraft 3. Its primary task is carrying water. Give it a bucket, it will fill the bucket with water, and put it somewhere (see Markers). Many Thaumcraft wizards make the most use of this ability by having their Tallow Golems perform the simple task of keeping their crucible filled as they perform various miraculous feats.
Heres a video that shows you how the tallow golem works http://www.youtube.com/watch?v=UYQNUwQ1zTw
To research Tallow golem you need the following aspects: Motus (Motion, Movement) Corpus (Body, Flesh, Physique) Imperito ( Control, Command, Dominate) Permutatio ( Exchange, Trade, Barter) and Fabrico( Create, Construct, Work)If placed upon an Arcane Alembic and there are marker blocks to identify both a chest where Phials are stored and warded jars, the Tallow Golem will be able to move 8 stored essentia from your alembics into your warded jars for you.