Gnocchi kentang

Bahan-bahan (3 porsi)

• 1½ lb . russet potatoes (washed, (about 2 potatoes, 670g) $1.30*)
• 2 egg yolks ($0.33)
• 1 tsp salt ($0.04)
• ¾ cup tepung serbaguna (ditambah lagi untuk taburan, (130g) $0,14**)
• 2 Tbsp butter ($0.23)