I have a table like this:

\documentclass{article}
\usepackage{ctable}
\begin{document}
\ctable
[caption=Sample]
{|p{2cm}|c|}
{}
{
\hline
some multiline (2 or 3 fields) field & need to vertically center this \\ \hline
one more field & and this \\ \hline
}
\end{document}
I want cells at the second column to be vertically center aligned. Which is the simplest and best method?
