I am finally going to make a Deus clone using Drew Beechums / Maltose Falcons recipe and directions. The Deus spice recommendations are lavender, cinnamon, allspice and ginger in the bottling sugar solution. However, he makes no quantity suggestions for each of these spices. Anyone done this recipe and have suggestions on the amount of each spice to use?
I haven’t done the recipe but I’ve had the beer a few times and I don’t think it has those spices in it. It has a spicy belgian yeast and pils malt character though. I would leave the spices out completely.
But if you want to add some, I would just wait for Drew to find this thread and he’ll tell you himself. Give it a few hours. 
My WAG: 1 gram of each per gallon. But I’m in the “if you can name the spice (while you’re drinking it), YDIW” camp.
That took significantly longer than a few hours… sheesh.
Final answer - probably in the area of 1-2 tsp of each.