Steam the carrots

• Peel the carrots and slice them.
• Steam the carrot slices until completely tender.

Mash the carrots

• Transfer the steamed carrots to a bowl and mash them thoroughly.

Make the carrot dough

• Add the cornstarch to the mashed carrot and mix well.
• Knead briefly with your hand until the mixture holds together.

Shape the balls

• Roll the mixture into small balls.

Boil the carrot balls

• Bring a pot of water to a full boil.
• Drop in the carrot balls and cook until they float and are cooked through, then drain.

Prepare the sauce

• Combine the ketchup, soy sauce, sugar, black vinegar and water and stir well.
• Pour in the hot oil and mix.

Cook the balls in the sauce

• Add the carrot balls to the sauce and cook until the sauce bubbles and thickens.
• Sprinkle with black sesame seeds and toss well over high heat.