Creamy Puy lentils

Luxurious way with lentils. We ate this with chunks of squash roasted with herbs and orange zest. Horatio said it would have been nicer with chicken, but he's a well-known lentil hater.

200g Puy lentils
1 finely chopped onion
1 clove finely chopped garlic
juice of an orange
1 tbsp balsamic vinegar
2-3 tbsp creme fraiche

Cook the lentils (about 20-30 minutes, depending on their age). Drain, but keep the water, which will be thick and black.

At the same time, fry the onion until it is soft, then add the garlic and keep cooking for five more minutes. Add the orange juice, vinegar, creme fraiche and a little blackwater (start with 1-2 tbsp). Warm through, then add the lentils. Taste and season.