Hi Isaac,

I think I hear you asking a couple different things - and dieta can mean a couple different things.

In Amazonian traditions there are plant dietas - where one eats a very simplified diet of manioc or plantains (depending on where you are) and works with aya and another teacher plant (or combination of teacher plants) in an intensive way for several days. Usually there's a period of abstinence from things like meat, alcohol, and sex well before and after. It was actually in this kind of experience that Mestre Irineu received the living doctrine of the Daime.

In the SD there is a practice of not engaging in sex or alcohol consumption three days before and three days after a work. It's a way of respecting the medicine and keeping energies clear. Then again, that is just a basically guideline, and since we're all still human beings here, I'm sure there are some deviations from it...

As for nutrition, some people avoid red meat, some avoid garlic, onions, and heavy spices - which do tend to color the experience - and then some don't worry at all about what they eat.

Keep your prayer strong and heart guided and the right door will open for you, at the perfect time.