Recipes Cauliflower Gratin | SOSCuisine

Ingredients

• 7 cups cauliflower
• 1/4 cup butter, unsalted
• 2 tbsp white flour (all purpose)
• 2 cups milk, partly skimmed, 2%
• 3 tbsp horseradish
• 2 tsp apple cider vinegar
• 2 tsp Dijon mustard
• 2.2 oz Emmenthal cheese
• 1 pinch salt
• ground pepper to taste