Ocado Frozen Diced White Onions. With a slightly sweet and pungent flavour, these frozen, diced onions are a handy staple to store in your freezer, without worrying about waste. As 80g is 1 of your 5 a day, they're an easy ingredient to add to the base of your favourite dishes and recipes. Pan fry in minutes as the starter flavour for soups, stews, casseroles, pasta sauces, spaghetti Bolognese and chilli. Want to fill your freezer with more enticing essentials? Search 'Ocado frozen' for lots of inspiration including frozen fish, fruit and veg and chopped herbs and spices.