"Mesch" is not a commonly used word in English, and its spelling may be confusing. The IPA phonetic transcription of "mesch" is /mɛʃ/. This shows that there is an "e" sound, followed by the "sh" sound. The "e" is pronounced like the "e" in "bet" or "met". The "sh" sound is the same as the sound in the word "ash". Therefore, the correct spelling of "mesch" is with an "e" rather than an "i" and with "sh" instead of "sch".