Ocado Walnut Halves. These walnut halves are the perfect cupboard snack for yourself or unexpected visitors. Serve on their own in small bowls or, mix together with dark chocolate and dried fruits for a sweet and salty trail mix. High in omega 3 - Omega 3 ALA plays a role in keeping your cholesterol levels normal. - The beneficial effect is obtained with a daily intake of 2g a-linolenic acid, as part of a balanced diet. Search 'Ocado dried fruit' to pick and mix your favourite fruits when creating your own trail mix.