Rinse the lentils in cold water and allow them to soak whilst you prepare the vegetables.
Clean the leeks, remove the tough outer leaves and then cut them into 5mm thick rounds.
Peel the garlic cloves and slice them as finely as you can.
Cut the celery into 2-3mm (⅛") slices.
Peel the parsnip and cut it into a 1cm (½") dice.
Peel and cut the potatoes into a 2cm (¾") dice.
Cut the carrots into 2-3mm (⅛") rounds.
Heat a pan over a medium heat and add the vegetable oil and the bacon, then cook for 5-8 minutes to allow the fat to begin to render out.
Add the garlic and celery and cook for another 2 minutes.
Throw in the leeks, potatoes, parsnip and carrot and cook for a further 5 minutes.
Pour in the vegetable stock, drain the lentils and add them along with the salt, pepper, bay leaves and thyme, reduce the lid to low and cook for 35 minutes.
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Notes
The calorific value of this recipe is based on 6 portions.