Cauliflower & Gruyère soup topped with fried capers - Trois fois par jour

Ingredients

• 1 tablespoon of butter
• 1 yellow onion, chopped roughly
• 4 cups of cauliflower
• 1 yellow flesh potato, peeled and diced
• 5 cups of chicken broth Replacement options of vegetable broth
• 1 tablespoon of sherry vinegar
• 1 cup of gruyère cheese, grated Replacement options of emmenthal or Valbert
• 1/4 de cup of 35 % cream
• Salt & pepper, as preferred
• 1/4 cup of capers, rinsed and strained
• 1 teaspoon of vegetable oil