Offering also mentioned in Flower Adornment Sutra profusely.
Its an interesting and essential topic to know.
What is the purpose of setting up altar with Statues of divinities?
Remember some of the offering that GM shared for the Dream Revelation Yidam or getting answers in dream?
Remember what are the offering for Earth Deities?
Cultivation starts with Resource Path and offering is one part of it!
Purification of One's Body Speech Mind is also another important factor from the start. :)
If all are one and one represents all, as in Adharmabuddha or Adibuddha, why the differences in type of offering?
Differences, like disputes or disagreements, came from Birth of phenomena of each individual's sentient mind.
One needs to cultivate to Enlightenment or Full Realisation to drop the differences to free Self, walking the Middle Path is essential.
BUT the basics or fundamentals need to be cultivated or acquired and no short cut is available! :)
GM instructed me years ago, to stop giving straight answers, so that those sincere and diligent ones will go put in their own efforts.
Remember: GM said only you can cultivate to make a difference to Self and No one else can do it for you!
Om Guru Lian Sheng Siddhi Hom