French

Medium · Hot

Lentils with Bacon, Carrots and Mustard

Lyon considers lentils serious food, and rightly so. Bacon renders its fat first, then onion and carrot soften in it until the pot smells entirely of the countryside. The lentils absorb everything — the smoke, the sweetness, the mustard stirred in at the end — and arrive at the table as something honest and deeply sustaining.

Recipe by

Claude Beaumont

The Bistro Classicist

Prep

15 min

Cook

35 min

Total

50 min

Method

Render the Bacon

Cut the bacon into 1-inch pieces. Place in a cold saucepan over medium heat and render slowly, stirring occasionally, until the fat is fully released and the bacon pieces are golden and crispy, about 8 minutes.

Using a slotted spoon, transfer the bacon to a bowl and reserve. Keep the rendered bacon fat in the pan.

Build the Aromatics

Dice the yellow onion and add it to the bacon fat. Cook over medium heat, stirring occasionally, until softened and translucent, about 5 minutes.

Mince the garlic and slice the carrots into half-moons. Add the garlic to the onions and cook for 1 minute until fragrant. Then add the carrots and cook for another 3 minutes until they begin to soften at the edges.

Cook the Lentils

Add the lentils to the pan along with the water, thyme sprigs, and salt. Bring to a gentle boil, then reduce to a steady simmer.

Cook uncovered for 25-30 minutes, stirring occasionally, until the lentils are tender but not mushy and most of the liquid has been absorbed. Add more water if the pan dries out too quickly.

Finish with Butter and Mustard

Remove the thyme sprigs. Add the reserved bacon pieces back to the pan.

Remove the pan from heat and stir in the butter and mustard vigorously. This is the moment we build the sauce — the residual heat will melt the butter while the mustard emulsifies everything into a glossy, clinging coat.

Season with black pepper and additional salt to taste. Serve immediately in warmed bowls.

Nutri-Score

Fair balance

A–E · lower is better · score 7

Calories

638

per serving

Calorie-dense · 638 kcalHigh in protein · 39gLow sugar · 5g

Protein

39g

Carbs

59g

Fat

28g

Sat. fat

Fiber

Sugar

Sodium

1326mg

Gluten FreeDairy Free AdaptableHeart Health ConsciousDiabetes FriendlyHigh ProteinHigh FiberIron Rich

Nutri-Score is a general nutritional-balance guide, not medical or dietary advice.

Environmental impact

Low impact

A–E · lower is better · includes estimates

kg CO₂e

0.9

per serving

BCarbonAEU all-round· carbon sets the grade

Water

0.2m³

Land

36Pt

Runoff

0.09g P

Bacon drives 70% of this recipe’s estimated footprint.

Carbon from Poore & Nemecek 2018; water, land & runoff from Agribalyse — modelled averages for comparing recipes, not a measurement of your groceries.

Flavor Profile

Umami

Sweet

Salty

Sour

Bitter

Spicy

Textures

CrispyTenderSilkyChewy

Aromas

SmokyHerbalSavoryEarthy

Kitchen Equipment

Primary Tool

Saucepan

Saucepan Frying PanChef'S KnifeCutting Board Slotted Spoon Whisk Wooden Spoon Mixing Bowl

Counter FootprintSmall

Techniques

RenderingSautéIngSimmering Emulsifying

Safety & Storage

Cooking Temperature

Render bacon slowly over medium heat until fat fully releases and pieces are golden-crisp, about 8 minutes. Do not rush this step or exceed safe temperatures.
When finishing with butter, remove pan from heat before stirring in butter and mustard. Residual heat will melt butter and emulsify sauce—excessive heat can cause butter to separate.
Bacon in this recipe is rendered slowly over medium heat for approximately 8 minutes. While this method typically produces adequately crispy bacon, for food safety assurance, verify bacon has reached a minimum internal temperature of 145°F (63°C) before consuming.

Cross Contamination

Use separate cutting boards and utensils for raw bacon and ready-to-eat vegetables. Wash hands thoroughly after handling raw bacon before touching other ingredients.
Reserve rendered bacon fat in pan after removing bacon pieces with slotted spoon to prevent direct contact with bacon flesh.

Storage

Store leftovers in airtight containers at 40°F or below within 2 hours of cooking. Lentil and bacon stew keeps 3-4 days refrigerated.

Allergen Warning

This dish contains milk (butter) and mustard. Verify all guests have no allergies before serving. When reheating, ensure butter fully incorporates back into dish.

High Risk Population

Individuals with milk or mustard allergies should avoid this dish entirely. For lactose-intolerant guests, butter can be substituted with dairy-free alternative, though texture may differ.

Handling

Bacon is a ready-to-eat protein that must be fully cooked before consumption. Ensure bacon reaches internal temperature of 145°F during rendering process.

Pro Tips

Technique

Render your bacon slowly from cold — never start with a hot pan. Patience here builds flavor, and the fat renders properly instead of seizing up. This is the foundation of your entire dish.

Substitution

If you cannot find fresh thyme, use fresh rosemary instead — but never dried. The difference is not subtle, and your lentils deserve better than dried herbs.

From the chef

This is the dish I make when I want to remind myself why I became a chef. Not for the accolades or the Michelin stars — for this. The slow render of the bacon, the way the fat takes on the sweetness of the carrots, the final flourish of mustard pulling everything together into a glossy, clinging sauce. In Lyon, we called this "Plat du pauvre" — the poor man's dish — but I reject that framing entirely. There is nothing poor about a pot built with proper technique and finished with love. This is bistro cooking at its most honest.

Claude BeaumontThe Bistro Classicist

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TagsBistroLentilsOne Pot MealHeartyWinterComfort FoodBacon

AllergensMilkMustard

Source: generated · May 30, 2026