diff --git a/_includes/layouts/base.njk b/_includes/layouts/base.njk
index f1c62e0..7413509 100644
--- a/_includes/layouts/base.njk
+++ b/_includes/layouts/base.njk
@@ -21,6 +21,7 @@
                 <ul>
                     <li><a href="/">home</a></li>
                     <li><a href="/blog">blog</a></li>
+                    <li><a href="/cookbook">cookbook</a></li>
                 </ul>
             </nav>
         </header>
diff --git a/public/a/button-cohost-plus.png b/public/a/button-cohost-plus.png
new file mode 100644
index 0000000..2f7235f
Binary files /dev/null and b/public/a/button-cohost-plus.png differ