I think Cthulu may have just not been fully implemented when we released the demo. I'll have to take a look to see if that works in the current build of the game.
Stamina Potion is Potion Base (Herbs and Pixie Dust) and Leaves
Salad is Tomato and Leaves (different ingredient than herbs - you have to make the magic beans and grow the beanstalk to get leaves. this is what the soil with the bean sprout in the garden is for.)
Root Beer is Soda and Leaves
Frappucino is Coffee and Ice Cream
Mocha Latte is Coffee and Chocolate (I think this one is bugged in the demo and produced Pumpkin Spice Latte instead)
Thank you for the input. I'm planning to add more hints to the assistant character when you click on her. There are also plans to add additional unlockable assistants.