This chapter investigates women’s knowledge of and engagement with household medicine in eighteenth century Finland, through a previously unknown recipe manuscript from Raukko in western Finland. The recipe manuscript will be digitized and published within the framework of the Historical Recipes project at the Society of Swedish Literature in Finland—a project aimed at making historical recipes accessible to researchers and a wider public alike. The focus in this chapter is on one recipe—“The Potent Water of Mrs. Christina De la Gardie”—which is considered a utility text in the intersection between learned and traditional medicine. The sourcing of ingredients, distilling process, and potential usage of the Potent Water are considered. In doing so, the implications of what previous knowledge and experiences were required of someone using the recipe are discussed. Access to commercial remedies as well as women’s position as healers within the household and beyond are taken into account. This chapter seeks to open up this newly available source material and suggests a sociocultural belonging within a wider European context.