diff --git a/README.mdown b/README.mdown
index 90f7c2a..66d90cf 100644
--- a/README.mdown
+++ b/README.mdown
@@ -167,7 +167,7 @@ simple sugar | 15 g | 5 g
 
 4. Cover un-lid jar opening with aluminum foil and [autoclave](#autoclave) for 1 hour.
 
-5. Allow to cool and replace aluminum foil with mason jar lid.
+5. Allow to cool and replace aluminum foil with mason jar lid, screwing closed tightly to prevent spilling.
 
 6. Store in a dark cool place until inoculation.