Soup | Vegetarian Diet (if vegetable broth) Gluten Free Diet (check broth/thickeners)

Onion Soup

N/A (Prepared food) Allergens: None (May contain Gluten, Dairy if topped with cheese, check ingredients)
Onion Soup

Sourcing & Taxonomy

  • Family Alliaceae
  • Primary Cuisine French
  • Seasonality Year-Round (comfort food, popular in colder months)
  • Source Onions, Beef/Vegetable broth, Butter, Flour, Wine

The Forktionary Angle

"Unveiling the art of perfect caramelization for a soul-warming bowl."

Definition

A savory soup primarily featuring caramelized or sautéed onions, often simmered in broth and sometimes topped with cheese and croutons.

Sensory Profile

TasteSavory, Umami, Sweet (from caramelized onions), Salty, Rich
TextureSmooth, Silky, Liquid (can be slightly chunky from onions)
AromaPungent, Earthy, Sweet, Aromatic
AcidityLow to Medium (depending on wine/broth)

Technical Metrics

Global Popularity Index

High (Universally loved)

Science of Caramelization

Maillard Reaction

Traditional Serving Temp.

Hot (60-70°C)

Nutrition Facts

Per 250ml (1 cup)
Calories50 kcal
Total Fat3 g
Saturated Fat1.5 g
Trans Fat0 g
Cholesterol10 mg
Protein2 g
Total Carbohydrate4 g
Dietary Fiber1 g
Total Sugars2 g
Calcium20 mg
Iron0.3 mg
Potassium80 mg

Chef’s Secret

Achieving deeply caramelized onions for your soup requires patience and low heat. Deglazing the pan with a splash of wine or broth several times during the process builds layers of rich, sweet flavor.

Substitutions

Best Match

Beef Broth + Sautéed Onions

1:1 (broth) + to taste (onions)

Best for replicating the savory depth, especially if using a bouillon cube.

Vegetable Broth + Sautéed Onions

1:1 (broth) + to taste (onions)

Vegan/Vegetarian friendly, will lack beefy richness.

Onion Powder + Bouillon

1 tsp powder per cup broth

Quick fix for onion flavor in a pinch, less complex.

Miso Soup (with onions)

N/A (flavor profile different)

For a savory, umami-rich broth with onion elements, though distinctly Asian.

Buying Guide

For convenience, choose low-sodium options for canned/packaged versions. If frozen, check for freezer burn.

Flavor Pairings

Grilled Cheese Crusty Bread Red Wine Roasts Garlic Thyme Bay Leaf.

Recipes Using Onion Soup

Baked French Rice image 170
White Rice White Rice Time To Make 4 Hours Or Less

Baked French Rice

This creamy, dreamy Baked French Rice Casserole is a family favorite, passed down through generations! Inspired by a recipe from 30 years ago, this comforting dish features tender rice, savory mushrooms, and water chestnuts baked to perfection in a rich and creamy sauce. Get ready for rave reviews – it's guaranteed to become a staple in your own family's recipe book!

See Complete Recipe