Our daily crunch: Top 8 granolas put to the test

GRANOLA – a handful makes a sustainable snack and a delicious summer breakfast. Oats are mixed with sugar or honey, sometimes with dried fruit, nuts and seeds and coated in an oil - often rapeseed or sunflower so it toasts in the oven to give it a cooked, crunchy feel.

Eaten with milk and a blob of yogurt to provide added protein, it can also be served with seasonal fresh fruit for extra vitamins and minerals.