Sushi is pronounced SOO-shee (IPA /ˈsuːʃi/). The 'sh' is /ʃ/ — 'SOO-shee' with a soft 'sh' in the middle.
IPA: /ˈsuːʃi/
Syllables: SOO · shee
Common ESL mistake: Learners say 'SOO-see' using /s/ instead of /ʃ/.
Tip: The 'sh' is /ʃ/ — 'SOO-shee' with a soft 'sh' in the middle.