Question: Which flowering evergreen shrub that is abused for its stimulant effects is known by the following street names: Abyssinian Tea, African Salad, and Oat?
Answer: Abyssinian Tea, African Salad, and Oat all refer to khat. The cited reference notes: ”Khat is a flowering evergreen shrub. Khat that is sold and abused is usually just the leaves, twigs, and shoots of the Khat shrub. Khat is typically chewed like tobacco, then retained in the cheek and chewed intermittently to release the active drug, which produces a stimulant-like effect. Dried Khat leaves can be made into tea or a chewable paste, and Khat can also be smoked and even sprinkled on food.” (https://www.dea.gov/pr/multimedia-library/publications/drug_of_abuse.pdf; accessed may 2017)