Prepare 1 potato and 1/4 onion.

Peel the potato and boil it in water for 20 minutes until tender.

Melt butter in a heated pan and sauté the sliced onion until soft. Set aside in a blender.

Toast bread edges in the same pan until crispy.

Cut the boiled potato into smaller pieces.

Blend the onion, potato, and 2 cups of milk until smooth.

Pour the blended mixture into a pan and simmer gently. Season with 1/3 tsp salt and a pinch of pepper.