Humanitarian aid in Central Europe after World War I repositioned both food and food research on a global scale. This essay follows the British scientific delegation that worked in Vienna as part of the food aid program and shows how the city became a “lab” for international nutrition. Assuming a political role, British nutrition experts were motivated to collaborate with local experts. To examine what internationalism looked like in the lab, the essay reconstructs the forgotten Viennese NEM system, a scientific (...) theory in which food was measured in milk units instead of calories, and demonstrates the unlikely ways the British researchers adopted it. The exchange of scientific standards between experts resulted in a series of milk experiments in which human and animal milks were exchanged and compared. Bearing on historiographic discussions of standards and internationalism, this case study offers an intervention into how we connect the history of measurement, international politics, and living creatures. (shrink)