it's funny to see these things with gringo eyes. The Ethnobotany of Candomblé with Dr. Bob Voeks

https://www.youtube.com/watch?v=VtdSO0hRUCE

The Ethnobotany of Candomblé with Dr. Bob Voeks

YouTube
speaking of rue, mine has flowered for the first time!!

> Rue is used to flavor coffee in Oromia. You simply cut small sprigs of rue leaves from your garden; wash it and deep a sprig in a hot cup of coffee and drink. It gives the coffee a very nice refreshing lemony flavor.

> Rue is used along with many other herbs and spices to prepare an important spice known as “berbere” made of red hot Oromian peppers. For these Oromiaans use the dried rue berries. The dried berries can also be added to roasted coffee bean and grounded together to flavor the coffee. Oromians call rue “Ciraakota or Cilaakota”. The direct translation is Tree of Health or Tree for Life. It means that this herb gives health to life and humanity. It seems the opposite of what the West says about this forgotten herb.

hmm is that Oromo? it's hard to find information

it's not on Mawadza's English-Oromo dictionary  for "life" it gives jireenya. I won't get anywhere like this, let's switch gears and search articles
ok so immediately it's clear that rue is widely used all over Ethiopia for many food items including a fermented porridge taken by lactating mothers—but it seems to be mostly Ruta chalapensis not R. graveolens

> Culturally specific remedies for the evil eye, involving Asparagus africanus var. puberulus in
combination with Allium sativum and Ruta graveolens, were novel to our study, despite previous
reports of these plants for uses such as hematuria, hemorrhoids, malaria…

come on, study, R. graveolens for evil eye has been documented for at least 2 thousand years

> In traditional coffee rituals, a spring of rue (Ruta graveolens; Local name: “Tennadum”) is usually added to a cup of coffee (Figure 2F). It improves the flavor of a cup of coffee. People add sugar to coffee all throughout the globe to make it taste better, but in Ethiopia, the traditional coffee ceremony is served with rue. Fresh rue leaves provide health advantages and are said to ease headaches, in addition to adding flavor to a cup of coffee. In some parts of Ethiopia, it was combined with butter (known as "Nitr kibe" in Amharic) in a coffee cup.

I find plenty of attestion for tennadum in this context, but no other reliable sources for ciraakota/cilaakota. I'll keep the name with a grain of salt, but I'm convinced to try a sprig of tennadum from my balcony with cofe this morning :3

if there's one people in the world I'll trust about coffee, it's Ethiopians