Consistent vertical spacing with tabu

Question

In the following table I get some vertical space after the rows whose content is short but not after the row having a cell with long content.

The problem is that I want to generate the report from my program and I won't know ahead of time whether each cell will be long or short and I am really hoping that I don't have to do something like examine the content and output different latex code for short and long content cells.

\documentclass{article}
\usepackage{xcolor}
\usepackage{colortbl}
\usepackage{booktabs}
\usepackage{tabu}
\begin{document}

\begin{center}\small 
\extrarowsep=3pt\begin{tabu} to \columnwidth{>{\bfseries}lX}
            \everyrow{\tabucline[blue]-} 
A & a \\ 
B & b \\ 
C & c \\ 
D & Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum. \\ 
E & e \\ 
\end{tabu} 
\end{center} 

\end{document}

Output:

Answer 1

For consistent spacing with tabu you should use the \tabulinesep command before your table. You can also make it so that the value stay applied throughout your document if you use it outside a block.

\documentclass{article}
\usepackage{xcolor}
\usepackage{colortbl}
\usepackage{booktabs}
\usepackage{tabu}
\usepackage{lipsum}
\begin{document}
\tabulinesep=1.2mm
{\centering
\begin{tabu} to \columnwidth {>{\bfseries}lX}
\everyrow{\tabucline[blue]-} 
A & a \\ 
B & b \\ 
C & c \\ 
D & \lipsum[1] \\ 
E & e \\ 
\end{tabu}}
\end{document}