How to change the line spacing within an equation environment?

Question

see this post

Example;

\begin{equation*}
  \begin{aligned}
    1 + 2 = 3 \\[3mm]
    3 + 1 = 4 \\[3mm]
    4 + 1 = 5
  \end{aligned}
\end{equation*}

I find that I'm often adding the [3mm] to the ends of equation lines so that the spacing isn't so tight between lines, but is there a way to set this for

• a particular equation instance
• globally for equations

I can't seem to find this out.

edit

this worked

\begin{equation*}
  \addtolength{\jot}{12pt}
  \begin{aligned}
    1 + 2 = 3 \\
    3 + 1 = 4 \\
    4 + 1 = 5
  \end{aligned}
\end{equation*}