As soon as the professor declared that the five minutes were up, Austin was ready. He was used to working with people yelling, mainly because he would sometimes help his mom out in the hospital she worked at. People were good under pressure there, and he was proud to have picked up that trait from his mother.
He picked up the blood mixture in his right hand, and the crushed claw in the other (in their respective bowls of course). The professor said slowly with the blood first. So Austin tipped his blood mixture into the cauldron, making sure not to let it pour too fast. It took a second or two, mainly because the blood didn't run the same way water or pumpkin juice did. But Merlin's beard it was tempting to just pour the whole thing in at once. The emphasis on the 'slowly' part made Austin realize that that's what was supposed to happen, which meant that he shouldn't put it in quickly. Which meant that Austin wanted to do just that. The only thing is that he didn't know what would happen. If it were to just make a small mushroom cloud, that would be one thing. But if it were to blow up or something... well, let's just say Austin liked playing pranks, but none that would get anyone seriously injured.
Austin went back to concentrating on the blood, and once the last drop had fallen from the bowl and into the cauldron, he wasted no time dumping in the claw. Since the professor didn't specify how the claw should be put in, he just dumped it all at once. He had to admit it was very satisfying after the slow process of the blood. After putting down the bowl and mortar, Austin pulled over his notes, and wrote down the fifth step, underlining 'slowly' and 'immediately'.