Ingredients:
- 2 cups fresh or frozen blueberries
- 1 medium red onion, finely diced
- 1 medium firm apple (like Granny Smith), peeled, cored, and finely diced
- 1/2 cup packed brown sugar
- 1/2 cup apple cider vinegar
- 1 tablespoon freshly grated ginger
- 1/4 cup raisins or sultanas (Optional)
- 1/2 teaspoon mustard seeds
- 1/4 teaspoon ground cinnamon
- 1/4 teaspoon salt
- Pinch of red pepper flakes (Optional)
Instructions:
- Dice the onion and apple. Grate the fresh ginger. Ensure all ingredients are measured and ready (mise en place).
- Heat the saucepan over medium heat. Add the diced red onion and a tiny splash of water (or a teaspoon of oil if desired). Sweat the onion gently for about 5-7 minutes until softened and translucent.
- Add the mustard seeds, cinnamon, and red pepper flakes (if using) to the softened onions. Stir constantly for about 30 seconds until fragrant.
- Add the diced apple, grated ginger, brown sugar, salt, and raisins/sultanas (if using) to the pan. Stir well until the sugar starts to dissolve slightly.
- Pour in the apple cider vinegar and add the blueberries. Bring the mixture up to a gentle simmer over medium-high heat, stirring occasionally.
- Once simmering, reduce the heat to maintain a steady, slow bubble. Cook uncovered for 40-50 minutes. Stir every 5-10 minutes, especially near the bottom, to prevent sticking.
- The chutney is ready when the liquid has significantly reduced, the apples are soft, and the mixture coats the back of a spoon thickly. The blueberries will have mostly broken down, but some whole ones should remain for texture.
- Remove from heat. Allow the chutney to cool slightly before transferring it into sterilized jars. Store in the refrigerator; the flavour deepens overnight.