Fasolakia (Greek Green Beans)

Details

Ingredients

• ¼ cup olive oil
• 1 small onion, grated
• 1 ½ pounds fresh green beans, trimmed
• 4 tomatoes, pureed
• 2 yellow potatoes, peeled and cut into wedges
• ½ teaspoon salt, or to taste
• ground black pepper to taste
• 1 pinch white sugar
• water to cover