Piirakoissa
Piirakoissa is a Finnish noun form meaning “in pies” and is the inessive plural of piirakka, the word for pie or pastry. It is used to express location, specifically that something is inside multiple pies. In Finnish, the inessive plural is formed by adding the suffix -issa (or -issä after vowel harmony) to the plural stem of a noun. For piirakka, the plural nominative is piirakat, and the inessive plural becomes piirakoissa. This form is common in culinary texts, menus, recipes, and descriptive writing about baked goods.
Usage notes: Piirakoissa can refer to the pies themselves containing filling, or to items placed inside them.
Examples: Piirakoissa on omenatäytettä. (There is apple filling in the pies.) Reseptissä todetaan, että piirakoissa käytetään