Sumarry blog post plugin

Hi there,

I write a food blog: https://www.theroastedroot.net/ and I want to display the summaries of my blog posts the same way this blog does: https://www.perrysplate.com/. Can you please tell me which plugin she uses? I’ve seen many food blogs use this type of summary format, and I’d like to do the same. There’s also this site: https://www.eatliverun.com/. Any info about displaying excerpts of my most recent posts would be great.
thanks,

Julia