Make the liquid recipes work without functions.

treegen.lua

@@ -150,6 +150,20 @@ bucket.register_liquid(
 	{}
 )
 
+minetest.register_node("fun_caves:amber", {
+	description = "Amber",
+	drawtype = "glasslike",
+	paramtype = "light",
+	sunlight_propagates = true,
+	tiles = {"fun_caves_amber.png"},
+	inventory_image = minetest.inventorycube("fun_caves_amber.png"),
+	light_source = 1,
+	use_texture_alpha = true,
+	is_ground_content = false,
+	groups = {cracky = 3, level=2},
+	sounds = default.node_sound_stone_defaults(),
+})
+
 minetest.register_node("fun_caves:syrup", {
 	description = "Syrup",
 	drawtype = "plantlike",
@@ -257,6 +271,13 @@ minetest.register_craft({
 	replacements = {{'fun_caves:bucket_sap', 'bucket:bucket_empty'},},
 })
 
+minetest.register_craft({
+	type = "cooking",
+	output = "fun_caves:amber",
+	recipe = "fun_caves:bucket_sap",
+	replacements = {{'fun_caves:bucket_sap', 'bucket:bucket_empty'},},
+})
+
 
 --minetest.register_craft( {
 --	output = "vessels:glass_bottle 10",