added butter

cow.lua

@@ -128,6 +128,30 @@ minetest.register_craftitem(":mobs:bucket_milk", {
 	groups = {food_milk = 1, flammable = 3},
 })
 
+-- butter
+minetest.register_craftitem(":mobs:butter", {
+	description = S("Butter"),
+	inventory_image = "mobs_butter.png",
+	on_use = minetest.item_eat(1),
+	groups = {food_butter = 1, flammable = 2},
+})
+
+if minetest.get_modpath("farming") and farming and farming.mod then
+minetest.register_craft({
+	type = "shapeless",
+	output = "mobs:butter",
+	recipe = {"mobs:bucket_milk", "farming:salt"},
+	replacements = {{ "mobs:bucket_milk", "bucket:bucket_empty"}}
+})
+else -- some saplings are high in sodium so makes a good replacement item
+minetest.register_craft({
+	type = "shapeless",
+	output = "mobs:butter",
+	recipe = {"mobs:bucket_milk", "default:sapling"},
+	replacements = {{ "mobs:bucket_milk", "bucket:bucket_empty"}}
+})
+end
+
 -- cheese wedge
 minetest.register_craftitem(":mobs:cheese", {
 	description = S("Cheese"),