Wash the sweet pumpkin thoroughly, remove the seeds, and cut into 2cm pieces.
Place the cut pumpkin in a steamer and steam for 15 minutes. Let it cool.
Peel the cooled pumpkin, place in a bowl, and mash with a fork.
Finely chop the boiled eggs, cucumber, and onion.
Add mayonnaise, salt, and pepper to the mashed pumpkin and mix well.
Add the chopped ingredients and mixed nuts, and gently toss together.
Plate the salad and garnish with nuts to finish.