Change snippet displayed from intra-site search

Hello Again!

How do I change the snippet that’s displayed when someone searches for a certain post using the search function within my blog.

The specific example I’m dealing with is right here: https://cultofamericana.com/index.php?s=the+power+of+steam.

I use Yoast SEO and that’s not the snippet I entered. Where did that snippet come from and how do I change it?

Thanks!