This is the 14572nd most frequent Russian word.
пельменям
"Пельменям" means "to dumplings" (dative plural form of "пельмени").
The word 'пельменям' is in the dative case because it is the subject of an impersonal construction indicating a necessity.
Пельменям требуется больше времени для варки.
Dumplings require more time to cook.
Here, 'пельменям' is in the dative case to mark what received the attention ('уделить внимание' requires dative).
Мы активно уделили внимание пельменям в нашем разговоре.
We actively paid attention to dumplings in our conversation.
The word 'пельменям' is used here in the dative case because it indicates the indirect object of the verb 'готовить' (to prepare).