Leviticus 6:16 "For every meal offering of the priest shall be totally burnt; it may not be eaten"

The meal offering is a mixture of oil and flour.

When a person who is not a priest brings this offering, a priest scoops up a portion (in a special way) and sacrifices it on the altar.

Then, the priests eat the remaining mixture. However, when a priest brings a meal-offering, it must be totally burnt. No one is allowed to eat any of it.