You stop slicing before the end to maintain uniform julienne stick length and avoid including the tapered or uneven ends of the vegetable. This ensures a consistent and professional presentation.
When creating julienne sticks, the goal is to achieve uniform size and shape. Vegetables often have tapered or uneven ends. If you slice the entire length of the vegetable, these irregular pieces will be included in your julienne, resulting in an inconsistent final product. By stopping before you reach the end, you can discard the uneven ends and only use the uniform portion of the vegetable for your julienne sticks. This ensures that all the sticks are roughly the same length and thickness, which is important for both visual appeal and even cooking. The process typically involves squaring off the vegetable first, then slicing planks of the desired thickness, and finally cutting those planks into matchstick-sized julienne. Stopping before the end of each plank allows you to maintain that uniformity.
To further enhance uniformity, consider using a mandoline with a julienne blade. This tool helps create consistent slices and sticks quickly and efficiently, minimizing variations in size and shape.