How to center and format my introduction the same as my chapters in my TOC?

Question

I want a center-aligned TOC. My MWE formats my chapters the way I want but not my introduction? How would I also format my introduction to match?

\documentclass{memoir}
\let\ordinal\relax
% TOC title
\makeatletter
\renewcommand{\printtoctitle}[1]{\centering\HUGE\textit{Contents}}
% Chapter
\usepackage{fmtcount}
\renewcommand{\thechapter}{\Numberstring{chapter}}
\renewcommand{\cftchapterleader}{}
\renewcommand{\cftchapterfillnum}[1]{\hspace{10pt}\huge#1\cftparfillskip\par}
\renewcommand{\cftchapterfont}{}
\renewcommand\chapternumberline[1]{\hfil\Large\emph{#1}%
\hfil\strut\huge\par\nopagebreak\hfil}
% Document
\begin{document}
\tableofcontents*
\chapter*[Introduction]{Introduction}
\addcontentsline{toc}{chapter}{Introduction}

\chapter{Where it All Began}
\chapter{Some More Beginning}
\chapter{Some Drawn-Out Diatribe}
\chapter{Starting to Wrapup}
\chapter{The Insightful Conclusion}
\end{document}

Answer 1

Try this code.

\documentclass{memoir}
\let\ordinal\relax
% TOC title
%\makeatletter
\renewcommand{\printtoctitle}[1]{\centering\HUGE\textit{Contents}}
% Chapter
\usepackage{fmtcount}
\renewcommand{\thechapter}{\Numberstring{chapter}}
\renewcommand{\cftchapterleader}{}
\renewcommand{\cftchapterfillnum}[1]{\hspace{10pt}\huge#1\cftparfillskip\par}
\renewcommand{\cftchapterfont}{}
\renewcommand\chapternumberline[1]{\hfil\Large\emph{#1}%
    \hfil\strut\huge\par\nopagebreak\hfil}
% Document
\begin{document}
    \tableofcontents*
    \chapter*[Introduction]{Introduction} 
    \addcontentsline{toc}{chapter}{\protect\chapternumberline{}Introduction}% changed <<<<<
    \chapter{Where it All Began}
    \chapter{Some More Beginning}
    \chapter{Some Drawn-Out Diatribe}
    \chapter{Starting to Wrapup}
    \chapter{The Insightful Conclusion}
\end{document}