Nigel Barden serves up lamb burgers with avocado and feta as two key ingredients of the dish on Drivetime with Simon Mayo.

Feta is a brined curd white-cheese made in Greece from sheep’s milk, or from a mixture of sheep and goat’s milk.

Avocados provide nearly 20 essential nutrients, including fiber, potassium, Vitamin E, B-vitamins and folic acid. They also act as a “nutrient booster” by enabling the body to absorb more fat-soluble nutrients.

The ingredients for the dish are: 500g New Zealand lamb mince, 2 tbsp tomato sauce, 2 tsp Worcestershire or any other brown sauce, 1 spring onion, thinly sliced, 12 mint leaves, shredded, 1 avocado, ¼ tsp finely grated lime zest, 2 tsp lime juice, 2 heaped tablespoons mayonnaise, 1 tsp mustard, 50g feta cheese, crumbled, 2 beefsteak tomatoes, thinly sliced, 1 tsp extra virgin olive oil, 4 burger buns, split open and 1 butter lettuce, leaves separated.