smoothieihin
Smoothieihin is a Finnish illative plural form of the loanword smoothie. In Finnish, smoothie refers to a blended beverage, and the suffix -iin marks direction or inclusion into something, so smoothieihin is used in sentences such as “lisää hedelmiä smoothieihin” (add fruits to the smoothies) or “smoothieihin käytetään erilaisia nesteitä” (various liquids are used in smoothies). It is not a separate culinary term, but a grammatical form that appears in everyday language about smoothies.
A smoothie itself is a beverage created by blending fruit or vegetables with a liquid, such as
Common varieties include fruit smoothies, green smoothies (with leafy greens like spinach or kale), and protein
Nutritionally, smoothies can provide fiber, vitamins, and minerals, especially when they emphasize whole fruit and vegetables.