Watermelon, sumac & feta salad - Good Food Middle East

Ingredients

• 1 shallot , thinly sliced into rings
• 2 tsp sumac , plus a pinch to serve
• 1 tbsp olive oil
• 1 lime , juiced
• 10g mint
• 700g watermelon (prepared weight), cut into chunky cubes
• 65g feta
• 4 slices sourdough bread , to serve