All healing magic is comprised of 3 elements:

• Material: Typically nutrients, but applies to anything used by the target body to heal. The physical material used to build the new flesh.
• Chronomancy: The best treatment for any wound is care and time. However, healing magic is near synonymous with triage healing, so care is minimal and time is typically supplied magically.
• Delivery: A mechanism by which the material enters the body to be used for healing.

While biotransmutation has become such a prevalent delivery method that it's nearly a hallmark of healing itself, oral delivery predates any recorded biotransmutation practices by millenia. The earliest recipes use crude material and imbue chronomancy the only way available: ritual. Long-growing plants (most evidence suggests some species of gourds or roots) are processed through a many-step, time-consuming procedure which "stores up" some the time spent making it. This time is released upon ingestion with a prayer, and while primitive it was undoubtedly effective.

[sidebar]Some early hunter groups performed "time-storage" rituals on bone, which catches and holds the ritual without it decaying, making them perfect pick-me-ups when going on long-term hunting trips. When needed, they were broken open with a prayer, and the marrow was simply chewed out.