The Yagya begins with a full series of Ganesha yagyas. 

First, a full puja was performed (as above) which included the 1008 names of Ganesha.

Then the fire yaya (homam) was performed with all the traditional ingredients; coconut, puffed rice, turmeric, sesame seeds, dates, and 1008 sweet modaka balls as seen in the photo below.

The final offering is called poornadhuti and is tied in a bundle of cloth which is then offered into the yagya fire.  Here you see dates, coconut, puffed rice, sesame seeds and betel leaf.

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