The increasing value of eggs for the fertility industry has led to systems that automate their availability, production, and extraction from bioavailable women. Situated in Spain’s highly developed private fertility sector, this ethnography asks how egg donors are stabilized for extraction within the reproductive bioeconomy. In this introductory chapter, I present the concept of taming to describe the ambivalent relationship between donors and clinics. I argue egg donation is perceived as a fragile process which can fail at any time and, therefore, is in need of monitoring and control throughout all its steps for a successful outcome. Here and throughout the book, I discuss the economic, racialized, and classed dimensions of this relationship. This chapter also outlines the conceptual and methodological approach I take to explore this complex orchestration of desires, risks, and reproductive potential.