How will you know if your oobleck is ready?

Oobleck is ready when it has the right consistency, feeling solid when pressure is applied but flowing like a liquid when at rest. It should easily form a ball when squeezed but collapse back into a puddle when released. If it holds its shape under pressure and flows smoothly without being too watery or too thick, you've achieved the perfect oobleck. Adjust the cornstarch and water ratiOS as needed to achieve this balance.