Combine the water, leek, carrot, turnip, celery, oil, and salt in a large saucepan or pot. Bring to a boil, cover, reduce the heat to low, and boil gently for about 12 minutes. Add the beans, ...

Place a large saucepan on a medium-high heat. Melt the butter along with a little drizzle of vegetable oil and then add the onion and celery, allowing it to soften in the bubbling melted butter ...