diff --git a/talks/FrevaZarrStreaming/LoadData.ipynb b/talks/FrevaZarrStreaming/LoadData.ipynb
index 33f69c8..285b7ce 100644
--- a/talks/FrevaZarrStreaming/LoadData.ipynb
+++ b/talks/FrevaZarrStreaming/LoadData.ipynb
@@ -1074,6 +1074,22 @@
     "dset[\"ua\"].mean(dim=(\"lon\", \"lat\")).plot(x=\"time\",  yincrease=False)"
    ]
   },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "id": "a66bd2cc-b8fe-4fca-98c4-186d2b5afba8",
+   "metadata": {
+    "editable": true,
+    "slideshow": {
+     "slide_type": "slide"
+    },
+    "tags": []
+   },
+   "source": [
+    "## How does it work?\n",
+    "<img src=\"outline.jpg\" alt=\"image\" width=\"50%\">"
+   ]
+  },
   {
    "cell_type": "markdown",
    "id": "43e6475e-e1ad-4aff-a3e9-4d165bc47bfb",
diff --git a/talks/FrevaZarrStreaming/index.slides.html b/talks/FrevaZarrStreaming/index.slides.html
index 7c098e2..2735962 100644
--- a/talks/FrevaZarrStreaming/index.slides.html
+++ b/talks/FrevaZarrStreaming/index.slides.html
@@ -8410,6 +8410,17 @@ <h3 id="Workflow">Workflow<a class="anchor-link" href="#Workflow">¶</a></h3><ul
 </div>
 </div>
 </div></section></section><section><section>
+<div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=a66bd2cc-b8fe-4fca-98c4-186d2b5afba8">
+<div class="jp-Cell-inputWrapper" tabindex="0">
+<div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
+</div>
+<div class="jp-InputArea jp-Cell-inputArea"><div class="jp-InputPrompt jp-InputArea-prompt">
+</div><div class="jp-RenderedHTMLCommon jp-RenderedMarkdown jp-MarkdownOutput" data-mime-type="text/markdown">
+<h2 id="How-does-it-work?">How does it work?<a class="anchor-link" href="#How-does-it-work?">¶</a></h2><img alt="image" src="outline.jpg" width="50%"/>
+</div>
+</div>
+</div>
+</div></section></section><section><section>
 <div class="jp-Cell jp-MarkdownCell jp-Notebook-cell" id="cell-id=43e6475e-e1ad-4aff-a3e9-4d165bc47bfb">
 <div class="jp-Cell-inputWrapper" tabindex="0">
 <div class="jp-Collapser jp-InputCollapser jp-Cell-inputCollapser">
diff --git a/talks/FrevaZarrStreaming/outline.jpg b/talks/FrevaZarrStreaming/outline.jpg
new file mode 100644
index 0000000..41e8dfd
Binary files /dev/null and b/talks/FrevaZarrStreaming/outline.jpg differ