An offering bundle assembled on paper by a paqo, layer by layer, from coca leaves, seeds, sweets, fat, flowers and wool, each element placed with an intention, then wrapped and either burned or buried. It is a ceremony of reciprocity with the land rather than an experience delivered to you.
The heart of it is the k'intu: three perfect coca leaves held together, breathed on with an intention, and placed in the bundle. You participate by making them. Nothing is ingested beyond possibly chewing coca or drinking coca tea, both of which are ordinary and legal in Peru and Bolivia.
This is the most participatory and least performative thing in this family. It is also the cheapest by an order of magnitude if you arrange it directly with a paqo in Cusco or Pisac rather than as a line item in a retreat package.
Coca leaf is legal in Peru, Bolivia and Colombia and is not cocaine. It is, however, a controlled substance almost everywhere else, and carrying leaves or coca tea bags home in your luggage is a criminal offence in most countries and will show on a drug test.
A representative shape drawn from how these are typically run. Use it as something to ask against, not as any one centre's timetable.