The Claw Grip
Place the celery onto the chopping board.
Make a claw with your hand by partly curling your fingers together. Decide how thick you want the slices before you begin.
Then, pick up the knife with your other hand and check that the blade is facing downwards.
Tilt the knife and slice through the celery, using your fingers as a guide.
Slide your fingers back, keeping your grip on the celery, and continue slicing carefully.
This method of slicing is safe, and can be used for lots of different ingredients, such as peppers or paw paw.