Phonetic research is both valid and important in the context of teaching foreign pronunciation. Its results provide methodological guidelines as well as they facilitate understanding of certain linguistic phenomena. The present paper is a review article of a recent monograph written by Zuzanna Czerwonka-Wajda, entitled “Wymowa samogłosek niderlandzkich przez osoby polskojęzyczne. Teoria, praktyka i dydaktyka” (Wrocław 2022: Oficyna Wydawnicza ATUT – Wrocławskie Wydawnictwo Oświatowe). The monograph is situated within the field of phonetics and is concerned with the pronunciation of Dutch vowels by native speakers of Polish. What seems important and particularly valuable, the book presents multifaceted research: theoretical, practical and foreign language teaching issues are being analysed. The author focuses not only on discussing concepts such as e.g. transfer, interference, norm.