def remove_formatting(ingredients_series):
    """Remove text formatting and non alphabetic characters,
    replace . with ,"""
    return (
        ingredients_series.str.replace("<strong>", "", regex=False)
        .str.replace("</strong>", "", regex=False)
        .str.replace(" \(.*?\)", "", regex=True)
        .str.replace(" \<.*?\>", "", regex=True)
        .str.replace(" \{.*?\}", "", regex=True)
        .str.replace(" \[.*?\]", "", regex=True)
        .str.replace("[^a-zA-Z\s,:-]+", "", regex=True)
        .str.replace(".", ",", regex=False)
    )