Hard Boiled Egg Sandwich | ekilu recipe

Ingredients

• 4 unit egg
• 1 stalk celery
• 2 handfuls arugula
• 2 tbsp mayonnaise
• 2 pinch salt
• 1 pinch black pepper
• 1 tsp parsley
• 6 slices whole wheat bread
• 1/2 unit red onion