Among the many new option Blogger now in Post settings allow adding a Search Description .
What this is about. The point is that now when you write a post in blogger you can add a Search Description for each post .You can write a small summary about content of your post and you can do it for all of your post
Now how you enable this option ,first you must enable Search Description for Your Blog go to Settings -Search Preferences - Meta Tags description edit in empty field put description of your blog ,enabling this option will automatically display Search Description in your Post Settings.
Where are Post settings ,click on new post and on right side you ll see post settings just like on image bellow
And that's it