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How to Make Grape Mostarda

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Ingredients
  

This recipe yields about 1 ½ cups of grape mostarda.

  • 1 tbsp olive oil
  • 1 large red onion, diced
  • 1 tsp yellow mustard seeds
  • ½ tsp kosher salt
  • 3 tbsp cider vinegar
  • 2 tbsp sugar
  • 1 tsp dijon mustard
  • 2 cups red grapes, halved

Instructions
 

  • Sauté Aromatics: Heat the olive oil in a medium saucepan over medium-low heat. Add the diced red onion, mustard seeds, and kosher salt. Cook, stirring frequently, until the onions are soft and translucent (about 10 minutes).
  • Add Sweet and Tangy Ingredients: Stir in the cider vinegar, sugar, and Dijon mustard. Let the mixture simmer gently.
  • Incorporate the Grapes: Add the halved red grapes to the pan. Cook for about 10 minutes, stirring often, until the grapes soften and start to break down but still retain some texture.
  • Cool and Serve: Remove the pan from the heat and allow the mixture to cool completely. Transfer the grape mostarda to a jar for storage or serve immediately.