Seems to be like “Eh-dew”, “Eh-dee”, “Eh-dich”, so eh- or uh- for the Y at the start. Welsh IPA guide on wiktionary says Y at the start is like the a at the start of “about”, when it’s not either a single-syllable or in the last syllable of a word, in which case it’s an “eee” sound, like the end of “happy”.
The original is in English, though?
https://old.reddit.com/r/funny/comments/1yk23w/the_magical_wish/