add helper function to add {eatable}

crops/mint.lua

@@ -38,12 +38,14 @@ minetest.register_craftitem("farming:mint_leaf", {
 
 -- mint tea
 minetest.register_craftitem("farming:mint_tea", {
-	description = S("Mint Tea") .. " (♥2)",
+	description = S("Mint Tea"),
 	inventory_image = "farming_mint_tea.png",
 	on_use = minetest.item_eat(2, a.drinking_glass),
-	groups = {flammable = 4, eatable = 2}
+	groups = {flammable = 4}
 })
 
+farming.add_eatable("farming:mint_tea", 2)
+
 minetest.register_craft({
 	output = "farming:mint_tea",
 	recipe = {