This article explores the concept of "Real Yield" in DeFi, a well-designed token economy that rewards all stakeholders and leads to sustainability. The article analyzes three sustainable DeFi projects that use Real Yield, namely $PENDLE$, $LQTY$, and $RDNT$, and explains how each project earns real yield. The article concludes by discussing the potential for Real Yield protocols to become a mainstay in the DeFi space.