Cut the carrot, avocado, and cucumber into thin strips.

Add salt to the cut vegetables and mix thoroughly.

Set the vegetables aside.

In a mixing bowl, combine rice vinegar and sugar.

Add the cooked rice to the mixture and mix well.

Place a seaweed sheet on a sushi rolling mat.

Spread a thin layer of the rice mixture evenly over the seaweed, leaving the edges uncovered.

Arrange the vegetable strips in a single line across the rice.

Make sure not to overcrowd the filling.

Start rolling the sushi tightly using the rolling mat.

Press firmly to tighten the roll.

Cut the roll in half using a sharp knife.

Use a back-and-forth motion without applying too much pressure.

Cut the halves into approximately 1/2 inch thick pieces.

Serve the Vegetarian Sushi with soy sauce.

Serve as a side dish with Spicy Vegetable Noodles or Chilli Paneer for a complete meal.