Cut potatoes into 2cm cubes, rinse in water, and drain. Microwave in a covered container for 5 minutes at 600W. Mash while hot.

Mix mashed potatoes with salt, butter, consomme, and mayonnaise. Reserve a small portion for tomato decoration. Add milk and mix until smooth.

Combine vinegar, sugar, and salt in a bowl and mix well.

Mix warm rice with the vinegar mixture and let it cool slightly.

Spread rice onto nori sheet, add smoked salmon, bell pepper slices, and lettuce, then roll tightly.

Cut one end of the roll diagonally for chimney decoration.

Spread mashed potatoes around the sushi roll and chimney piece. Use a fork to create texture resembling wood grain.