Double Bubble's Best Friend

Upgrade	Effect	Sell value	Magic Powder
+0	+10% Bear Jelly Party duration	552	3
+1	+10.5% Bear Jelly Party duration	636	4
+2	+11% Bear Jelly Party duration	762	5
+3	+11.5% Bear Jelly Party duration	930	6
+4	+12% Bear Jelly Party duration	1,140	8
+5	+12.5% Bear Jelly Party duration	1,392	9
+6	+13% Bear Jelly Party duration	1,686	12
+7	+13.5% Bear Jelly Party duration	2,022	13
+8	+14% Bear Jelly Party duration	2,400	17
+9	+15% Bear Jelly Party duration	2,820	21

Extracting this Treasure returns Magic Powder. The amount is fixed per Treasure and upgrade level — it does not depend on which ingredients were used to evolve it.

It's not as cool as Double Bubble, but it's just as sweet.