Insalata di patate e tonno (Potato Tuna Salad)

• 1 kilo/2 lbs waxy potatoes
• 1 small can of tunafish
• 1/2 medium red onion finely chopped
• a handful of fresh parsley finely chopped
• olive oil
• salt and pepper
• A squeeze of fresh lemon optional

Optional enrichments:

• green beans boiled or steamed until tender and chopped
• asparagus boiled or steamed until tender and chopped
• celery cut into small cubes
• cucumbers cut into small cubes

Possible garnishes:

• tomatoes either cut into cubes, and sliced and used as a garnish
• hard boiled eggs cut into wedges as a garnish
• anchovy fillets