Now offer the idol water to drink, thrice, while chanting "Om Shri Ganeshya Namah Achmaneeyam Samarpayami"
Then the idol has to be bathed with milk, curd, ghee, honey and sugar. Chant "Om Shri Ganeshya Namah Panchamrita Snanam Samarpayami"
After this offer holy water. All the five offerings are to be made separately chanting "Om Shri Ganeshya Namah Payah Snanam Samarpayami" when offering milk.
"Om Shri Ganeshya Namah Dadhi Snanam Samarpayami" when offering curd.
"Om Shri Ganeshya Namah Ghrut Snanam Samarpayami" when offering ghee.
"Om Shri Ganeshya Namah Madhu Snanam Samarpayami" when offering honey.
"Om Shri Ganeshya Namah Sharkara Snanam Samarpayami" when offering sugar.