diff --git a/main.py b/main.py
index 30e8ca0..bfd9382 100644
--- a/main.py
+++ b/main.py
@@ -12,6 +12,12 @@ from markdown.extensions.toc import TocExtension
 destpath_re = re.compile(r'\.md$')
 logging.basicConfig(encoding='utf-8', level=logging.INFO)
 
+md = markdown.Markdown(extensions=['extra', 'meta', TocExtension(anchorlink=True)])
+
+def convert(text):
+	md.reset()
+	return md.convert(text)
+
 def render_post(fpath):
 	destpath = destpath_re.sub('.html', fpath)
 	logging.info("opening %s for parsing, dest %s", fpath, destpath)
@@ -20,15 +26,13 @@ def render_post(fpath):
 		logging.info("reading %s", fpath)
 		text = input_file.read()
 
-	md = markdown.Markdown(extensions = ['extra', 'meta', TocExtension(anchorlink=True)])
-
 	logging.info("parsing %s", fpath)
-	out = md.convert(text)
+	out = convert(text)
 
 	title = md.Meta.get('title')[0]
 	date = md.Meta.get('date')[0]
 
-	out = markdown.markdown('# ' + title) + out
+	out = convert('# ' + title) + out
 
 	logging.info("writing to %s", destpath)
 	render_template('index.html.tmpl', destpath, {'content': out, 'more_title': ' - ' + title})
@@ -94,8 +98,7 @@ def rss_post_xml(post):
 		text = inf.read()
 
 
-	md = markdown.Markdown(extensions=['extra', 'meta', 'toc'])
-	converted = md.convert(text)
+	converted = convert(text)
 
 	pubdate = email.utils.format_datetime(datetime.datetime.fromisoformat(post['date']))
 	subs = {
diff --git a/posts/build_a_blog.md b/posts/build_a_blog.md
index a987331..95fac75 100644
--- a/posts/build_a_blog.md
+++ b/posts/build_a_blog.md
@@ -205,13 +205,14 @@ And pop open a python repl to see how this works.
 
 Looks pretty nice!
 
-So first I will adjust the rendering function to prepend a
+So first I will adjust the rendering function to prepend a line:
 
 ```markdown
 # {title}
 ```
 
-Line just after we read the file and extract the metadata.
+This has to be done after the full document renders because the `meta` `python-markdown` extension extracts metadata and converts to html in one call.
+
 
 ```python
 def render_post(fpath):