Ingredients
Method
1.Heat oil in a large saucepan on medium. Cook leek for 5 minutes, stirring, until soft.
2.Stir in carrot, potato, lentils and garlic. Dissolve stock cube in boiling water and add to pan. Simmer, covered, for 45 minutes, until lentils are tender.
3.Add spinach and simmer for 1 minute. Stir through lemon juice, season and serve.