diff --git a/crops/carrot.lua b/crops/carrot.lua
index b4baa8d..6ec1994 100644
--- a/crops/carrot.lua
+++ b/crops/carrot.lua
@@ -22,6 +22,7 @@ minetest.register_craftitem("farming:carrot_juice", {
 	description = S("Carrot Juice"),
 	inventory_image = "farming_carrot_juice.png",
 	on_use = minetest.item_eat(4, "vessels:drinking_glass"),
+	groups = {vessel = 1},
 })
 
 minetest.register_craft({
diff --git a/crops/pineapple.lua b/crops/pineapple.lua
index 8a60310..f62042e 100644
--- a/crops/pineapple.lua
+++ b/crops/pineapple.lua
@@ -47,6 +47,7 @@ minetest.register_craftitem("farming:pineapple_juice", {
 	description = S("Pineapple Juice"),
 	inventory_image = "farming_pineapple_juice.png",
 	on_use = minetest.item_eat(4, "vessels:drinking_glass"),
+	groups = {vessel = 1},
 })
 
 minetest.register_craft({
diff --git a/crops/raspberry.lua b/crops/raspberry.lua
index 4938658..979bdfb 100644
--- a/crops/raspberry.lua
+++ b/crops/raspberry.lua
@@ -17,6 +17,7 @@ minetest.register_craftitem("farming:smoothie_raspberry", {
 	description = S("Raspberry Smoothie"),
 	inventory_image = "farming_raspberry_smoothie.png",
 	on_use = minetest.item_eat(2, "vessels:drinking_glass"),
+	groups = {vessel = 1},
 })
 
 minetest.register_craft({