Lentil Bolognese

ingredients

• 3 tbsp olive oil
• 1 onion
• 2 cloves garlic
• 2 carrots
• 2 sticks of celery
• 115 g red lentils
• 1 can plum tomatoes
• 2 tbsp tomato paste
• 450 ml massel stock
• 1 tbsp oregano/marjoram
• salt
• pepper