French Onion Soup from 1651
French Onion Soup from 1651 is a medium French recipe that serves 4. 260 calories per serving. Recipe by Tasting History with Max Miller on YouTube.
Prep: 15 min | Cook: 1 hr 5 min | Total: 1 hr 35 min
Cost: $6.25 total, $1.56 per serving
Ingredients
- 6 large Yellow Onions (thinly sliced)
- 4 tablespoons Unsalted Butter (cut into pieces, room temperature)
- 2 tablespoons All-Purpose Flour (optional, for slight thickening)
- 4 cups Whole Milk (preferably 2% or whole for richness)
- 2 sprigs Fresh Thyme (leaves stripped, plus extra for garnish)
- 1 leaf Bay Leaf (whole)
- 1 teaspoon Salt (adjust to taste)
- ½ teaspoon Black Pepper (freshly ground)
- 4 slices Baguette (about 1‑inch thick, toasted)
- 1 teaspoon Olive Oil (for brushing baguette before toasting)
Instructions
Slice the onions
Peel the onions and slice them thinly (about 1‑mm thick) using a chef’s knife on a cutting board.
Time: PT5M
Caramelize the onions
Melt the butter in the heavy‑bottomed pot over medium‑low heat. Add the sliced onions, stir to coat, and cook slowly, stirring occasionally, for about 45 minutes until they turn a deep, uniform brown and are sweet‑aromatic.
Time: PT45M
Temperature: Low heat
Optional thickening
Sprinkle the flour over the caramelized onions, stir well, and cook for 2 minutes to remove raw flour taste.
Time: PT2M
Temperature: Low heat
Add milk and aromatics
Pour the milk into the pot, add thyme leaves and the bay leaf, and increase heat to medium. Bring to a gentle simmer, stirring frequently to prevent the milk from scorching, and cook for 20 minutes until the soup thickens slightly and the flavors meld.
Time: PT20M
Temperature: Medium heat
Season the soup
Remove the bay leaf, then season the soup with salt and freshly ground black pepper to taste.
Time: PT2M
Toast the baguette
Preheat the oven to 350°F (180°C). Brush each baguette slice lightly with olive oil, place on a baking sheet, and toast for 8‑10 minutes until golden and crisp.
Time: PT10M
Temperature: 350°F
Assemble and serve
Place one toasted baguette slice at the bottom of each oven‑safe soup bowl. Ladle the hot milk‑based onion soup over the bread, allowing it to soak slightly. Garnish with extra thyme leaves if desired and serve immediately.
Time: PT5M
Nutrition Facts
- Calories
- 260
- Protein
- 8 g
- Carbohydrates
- 30 g
- Fat
- 10 g
- Fiber
- 3 g
Dietary info: Vegetarian
Allergens: Dairy, Gluten
Ingredient Substitutions
- Instead of Yellow Onions: White onions, Sweet Vidalia onions
- Instead of Unsalted Butter: Olive oil (for a lighter flavor), Margarine
- Instead of All-Purpose Flour: Whole wheat flour, Rice flour (gluten‑free)
- Instead of Whole Milk: Half‑and‑half, Unsweetened soy milk (for dairy‑free)
- Instead of Fresh Thyme: Dried thyme (½ tsp)
- Instead of Bay Leaf: Dried oregano (¼ tsp)
- Instead of Salt: Sea salt
- Instead of Black Pepper: White pepper
- Instead of Baguette: French bread, Ciabatta
- Instead of Olive Oil: Butter
Equipment Needed
- Heavy‑Bottomed Pot (6‑qt)
- Wooden Spoon
- Chef’s Knife
- Cutting Board
- Measuring Cups and Spoons
- Baking Sheet
- Oven
- Ladle
- Soup Bowls (oven‑safe)
Critical Steps — Do Not Skip
- Caramelizing the onions slowly for 45 minutes without burning
- Simmering the milk gently to avoid scorching or curdling
- Toasting the baguette slices until crisp
Chef Tips from the Video
- Use sweet Vidalia or yellow onions for natural sweetness.
- Add a splash of dry sherry or white wine after caramelizing for depth of flavor.
- Finish with a drizzle of truffle oil for an indulgent twist.
Troubleshooting
Onions are not brown enough after 45 minutes
Continue cooking on low heat, stirring frequently; add a splash of water to deglaze if they begin to stick.
Soup is too thin
Simmer longer to reduce, or add a teaspoon more flour mixed with a little cold milk before stirring in.
Milk curdles or sticks to the bottom
Reduce heat to low, stir constantly, and add a splash of cream or a pinch of baking soda to stabilize.
Storage
Refrigerator: Store soup in an airtight container for up to 3 days. Reheat gently on the stove, adding a splash of milk if needed.
Freezer: Freezing is not recommended as the milk may separate, but you may freeze the caramelized onions separately for up to 2 months.
Room temperature: Do not leave the soup at room temperature for more than 2 hours.
Make-Ahead Tips
- Caramelize the onions up to 2 days ahead and store them in the refrigerator; reheat before adding milk.
- Toast the baguette slices just before serving to retain crispness.
Frequently Asked Questions
What is the cultural significance and history of French onion soup in 17th‑century French cuisine?
French onion soup dates back to medieval Europe, but the 1651 milk‑based version highlighted by Max Miller reflects the early modern French palate before beef broth became standard. It was reputedly a favorite of King Louis XV, showcasing the era’s love for slow‑cooked, richly flavored dishes.
How did the 1651 French onion soup differ from the modern version most people know today?
The historic recipe simmers caramelized onions in milk rather than beef broth, and it omits the melted Gruyère cheese topping that became popular in the early 20th century. Instead, a toasted baguette slice sits at the bottom of the bowl, absorbing the milky broth.
Why was milk used as the cooking liquid in the 1651 French onion soup instead of broth?
Milk was a common, readily available dairy product in 17th‑century France and provided a creamy, slightly sweet base that complemented the deep caramel flavor of the onions, predating the later shift to meat‑based broths for richer umami.
What occasions or celebrations was French onion soup traditionally served at in 17th‑century France?
It was often served as a warming starter during winter banquets and hunting feasts, especially after long hunts when the king and his retinue needed a hearty, comforting dish to replenish energy.
What regional variations of French onion soup exist within French cuisine?
In the Alsace region, a wine‑based version adds white wine; in Provence, herbs like rosemary replace thyme; and in some northern provinces, the soup was traditionally finished with a slice of stale bread soaked in the broth rather than a baguette.
What authentic ingredients were used in the original 1651 recipe versus modern substitutes?
The original called for yellow onions, butter, milk, fresh thyme, and a bay leaf. Modern cooks often replace milk with beef stock, add flour for thickening, and top with Gruyère cheese and croutons, which were not part of the 1651 version.
What other 17th‑century French dishes pair well with this historic onion soup?
It pairs nicely with a simple green salad dressed with vinaigrette, a slice of rustic country bread, or a classic roasted chicken (poulet rôti) that was common on French tables of the era.
What are the most common mistakes to avoid when making the 1651 French onion soup?
The biggest pitfalls are burning the onions by cooking them too quickly, allowing the milk to scorch or curdle, and under‑seasoning the broth. Patience during caramelization and gentle simmering of the milk are key.
Why does this recipe use milk instead of broth, and how does that affect the final texture?
Milk provides a creamy, slightly sweet mouthfeel that coats the caramelized onions, resulting in a velvety texture. Broth would give a clearer, more savory profile, changing the soup’s character entirely.
Can I make the 1651 French onion soup ahead of time and how should I store it?
Yes, you can caramelize the onions up to two days ahead and keep them refrigerated. Reheat the onions, add fresh milk, and simmer before serving. Store the finished soup in the fridge for up to three days; reheat gently on the stove.
What does the YouTube channel Tasting History with Max Miller specialize in?
The YouTube channel Tasting History with Max Miller specializes in recreating historic recipes from different eras, exploring the cultural context behind each dish, and presenting them with modern cooking techniques for home cooks.
How does the YouTube channel Tasting History with Max Miller's approach to historical cooking differ from other culinary history channels?
Max Miller focuses on rigorous primary‑source research, often using original cookbooks and archival documents, and he emphasizes the story behind each recipe, whereas many other channels prioritize visual appeal over historical accuracy.
Last updated: August 21, 2026
