ruuanlaittotaito (Finnish) comes from Finnish ruuanlaitto, from Finnish laitto, from Finnish laittaa, from Proto-Finnic laittadak, from Proto-Germanic lagjaną, from Proto-Indo-European legʰ- — to lie.
Ancestry of “ruuanlaittotaito”, step by step
ruuanlaittotaito traces back through two separate lines of ancestry.