diff --git a/biofuel-manager.lua b/biofuel-manager.lua
index de23200..57a6267 100644
--- a/biofuel-manager.lua
+++ b/biofuel-manager.lua
@@ -57,7 +57,6 @@ local order = {
     end,
     biofuel = function (amt, ticker)
         -- TODO
-        amt = math.floor(amt / 125)
         local request = function ()
             local biomass = {
                 name = "createaddition:biomass",
@@ -73,20 +72,32 @@ local order = {
             }
             return biomass, sugar, cinder_flour
         end
-        local notEnoughMaterials = function ()
-            -- TODO
+        local enoughMaterials = function ()
             -- use ticker to test ( biomass >= 32, sugar >= 16, and cinder flour >= 16
+            local check = {}
+            check["createaddition:biomass"] = 32
+            check["minecraft:sugar"] = 16
+            check["create:cinder_flour"] = 16
+            for _, item in pairs(ticker.stock()) do
+                if check[item.name] then
+                    check[item.name] = check[item.name] - item.count
+                end
+            end
+            local enough_materials = true
+            for name, count in pairs(check) do
+                if count > 0 then enough_materials = false end
+            end
+            return enough_materials
         end
-        local make_order = function (amt_to_make, amt_made)
-            if amt_to_make <= 0 then return amt_made end
-            if notEnoughMaterials() then return amt_made end
-            local count = ticker.requestFiltered(BIOFUEL_PKG, request())
-            if count == 0 then return amt_made end
-            amt_to_make = amt_to_make - count
-            amt_made = amt_made + count
-            return make_order (amt_to_make, amt_made)
+
+        local amt_made = 0
+        while amt_made < amt do
+            if not enoughMaterials() then break end
+            ticker.requestFiltered(BIOFUEL_PKG, request())
+            amt_made = amt_made + 2000
+            os.sleep(1)
         end
-        return make_order (amt, 0)
+        return amt_made
     end,
 }