Add polenta instructions to notes section

pages/notes/notes.html

@@ -64,6 +64,13 @@ <h4>Rice ratios</h4>
                     <li>1 cup dry Italian brown rice = just less than 4 cups cooked rice</li>
                     <li>1.5 cups dry Italian brown rice = 5.25 cups cooked rice</li>
                 </ul>
+
+                <h4>Polenta</h4>
+                <ul>
+                    <li>Bring 4 cups water (or stock) to the boil and add 1 cup dry polenta</li>
+                    <li>Cook for 10 minutes, stirring continuously</li>
+                    <li>Yields approximately 4 cups of cooked polenta</li>
+                </ul>
             </div>
         </div>
     </div>