huuhtelemalla
Huuhtelemalla is a Finnish grammatical form known as an adverbial participle. It expresses means or method and translates roughly as “by rinsing” in English. The form is derived from a verb meaning “to rinse” and is used to indicate that rinsing is the action through which another result is achieved.
Usage in practice is common in manuals, recipes, and instructional text, where the speaker wants to describe
Formation and grammar: The suffix -malla (or -mällä) attaches to the verb stem to form the adverbial
See also: Finnish grammar, adverbial participles, -malla/-mällä constructions.