Tuna, olive and potato salad with deep-fried onion rings - Saints Foodland

Ingredients

• 80g plain flour
• 1 teaspoon sugar
• pinch salt
• ½ teaspoon baking powder
• 160ml beer
• 2 large red onions
• 2 tablespoons plain flour
• vegetable oil for cooking
• 500g waxy potatoes, such as kipfler
• 150g green beans
• 12 large kalamata olives
• 50ml lemon juice
• 185g tin tuna in olive oil
• 1 packet rocket leaves, washed