Red Onions or purple onions with their wonderful color dark pinkish-red are a good choice for lots of fresh uses or for grilling, charbroiling, and roasting. These are a good choice for using raw, as in salads, garnishes or with chutney. They are also great when grilled and have the bonus of maintaining most of their color. Red onions have a mild, peppery flavour and are great for raw onion dishes where you want something not as sweet as a sweet onion. How they taste? – Assertive and spicy when raw; still strong, but sweeter, when cooked. Red onions are great for sandwiches and salads that are full of strong flavours. Red onions are available year-round: in summer and early fall, when they have not been in storage long, they taste sweeter, with their sharpness intensifying through the winter months.