diff --git a/tools/test/topos/dual.recipe b/tools/test/topos/dual.recipe
new file mode 100644
index 0000000..99dded7
--- /dev/null
+++ b/tools/test/topos/dual.recipe
@@ -0,0 +1,4 @@
+# Simple Dual topology recipe
+export OTD=2
+export OTL=1
+export OTH=1