Opening her book at the page about this potion, Thereza started to create the potion. She was so good at non-verbal spells now, that she didn't need to say any spells out loud, without a few of course, but those she didn't need now. Around her you could see dried nettles and snake fangs levitating, where the snake fangs were getting crushed into small pieces. Infront of her you could see the cauldron getting warm and then ingredients were jumping in it.
She didn't even raise her head when the stewed horned slugs arrived and jumped in the cauldron, but a short while later, when the cauldron and the potion seemed to be done around the fire, the levitated the cauldron off from the fire and then she added the final ingredient, the porcupine quills.
As she waited for the potion to finish off, she took a parchment up from her bag and wrote down a few short-cuts and non-verbal spells that you could use to shorten down the limit of time that one use to brew this kind of potion.
A clear, gray smoke arrived from the cauldron. A bottle arrived next to it and then Thereza started to fill the bottle with the potion. She wrote on a white parchment, Boil-Cure Potion and then glued it on to the bottle before she started to clean her table from all the mess she had created. But it only took her a flick of her wand before she was done and that gave her some time to start on her essay.