Traditional Irish Colcannon Recipe

Ingredients (8)

• 1 dash salt, plus more to taste
• 2 russet potatoes, peeled and quartered (22 ounces)
• 4 ounces curly kale, chopped and stems removed (about 1/2 bunch)
• 2 spring onions, roughly chopped (1/2 cup)
• 4 ounces (1/2 cup) unsalted butter
• 1 spring onion, finely chopped (1/4 cup)
• Freshly ground black pepper, to taste
• 2 ounces (1/4 cup) unsalted butter, optional for serving