How To Become A Giant With A Growth Potion

1. Giant's Teardrop

You'll need to first take a standard two pewter cauldron and pour in one giant's teardrop.
2. Golden Egg

The drop in one golden egg from the finest golden goose you can find.
3. Self-Playing Harp

You'll then need to add in a self-playing harp. Simply tap the harp twice to start the music and then drop it into your cauldron.
4. Magic Beans

Next, to kickstart the magic, please add three magic beans into the mixture.
5. Fee-Fi-Fo-Fum

Then simply tap your wand on the cauldron to the rhythmic tone of the famous phrase "fee-fi-fo-fum."

Then, leave the potion over night and by morning you'll find a magical beanstalk growing from the cauldron.
6. Pick A Leaf

Simply pick a leaf from the vine and eat for the transformation to begin.

Of course, you'll probably be stuck in this new gigantic state for the rest of the day. So, it's probably best to make sure you eat the leaf outdoors.