A root from the pumpkin family
Wereke, also spelled wereque and called guareque, is a dried root, 2 oz to the bag. The bag says one thing about the plant: it belongs to the pumpkin family, Cucurbitaceae.
It gives no species, no origin and no method. That makes wereke a root you buy by its name, the way you would ask for it at a Mexican herb stall, and brew the way your own recipe says. If the pieces are large, break them before they go into the pot. The pumpkin family is the one botanical fact the bag gives.
In the YERBERO range, Wereke is filed under W in the herbolario A–Z, next to Salvia blanca molida.