HARISSA BUTTER ROASTED MUSHROOMS WITH SPICY LEMON YOGHURT

Ingredients

• 1 red onion (very thinly sliced)
• ½ cup apple cider vinegar
• 1 tbsp sugar
• 1 tsp sea salt flakes
• 250ml plain double cream yogurt
• 1 small clove garlic (finely grated)
• 2 tbsp lemon juice
• 2 tsp Aleppo pepper
• good pinch of sea salt
• 125g butter (softened)
• 125g harissa paste
• 12 portobello mushrooms
• Store bought flatbread (naan or pita)
• fresh coriander
• lime wedges