Your objective when playing curse is to take orders, execute them, and return them. A customer will approach your window with a minimium set of ingredients, and you have to make a potion and put it in a cup to deliver it.
To get started mixing you drag out a flask from the shelf underneath the window and place it on the hot plate. After that, drag out the ingredients you want to use. Make sure to take note of their ingredient facts, as not following the instructions will lead to both you earning less and even the potential death of your customers. When you have the ingredients ready and the flask at the appropriate heat, drag them into the bottle and process it as described on the ingredient facts. If you are doing it correctly, you should see a layer close to the target color of the ingredient.
Your potions are rated using the following:
If you look at the color of the layers, you will be able to tell the state of each ingredient