Gnocchi buatan sendiri

Bahan-bahan (4 porsi)

• 4 russet potatoes (2 1/2 lbs)
• 2 1/2 cups flour + 1/2 cup extra for work surfaces as needed (we use DeLallo Tipo 00 flour)
• 1 cup ricotta cheese
• 1 egg
• 1 heaping teaspoon salt