I wonder if this is a fork or a re-package of the Recipes by Simmer plugin: https://wordpress.org/plugins/simmer/

WP Site Care is tagged as an Author on their free "Simmer Private" add-on in the plugin repo, and the main screenshots on Cookbook looks very similar to the Simmer post screen.

Also just saw on the Simmer blog that Brunch Pro (built by Feast Design Co.) was built for specifically for the Simmer plugin: https://simmerwp.com/blog/brunch-pro-wordpress-theme/