Now that you have acquired the Blue Potato, Blue Shell, Blue Starfish, Blue Book, and Blue Gem, we need to combine them together properly.
Brilliant Blue Potion
Inside the mines, you will find a small glowing water source in between a few mine carts and a wall of glowing rocks.
Interact with this glowing water source.
Place the Blue Potato, Blue Shell, Blue Starfish, Blue Book, and Blue Gem in the slots.
And voilà: You have created Brilliant Blue Potion!
Pick up the Brilliant Blue Potion.
With the Brilliant Blue Potion, you need to now save it in your home in storage.
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