I thought the soft mutation gaffi would be correct here. Where did I go wrong? Dych chi'n mynd i'r dafarn was right.
Singular feminine nouns mutation after "the" (y). i + y = i'r
caffi is masculine in Cymraeg.
Do plural feminine nouns mutat after yr too? E.g. Dw i'n mynd i'r dafarnau?
Only feminine nouns take a weak soft mutation after the definite article.
Plurals have no gender.