spanish onion

This onion is purple on the outside. You will usually find them at the supermarket, green groccers or even on your food when you go out. It can be on pizzas, in pastas, salads etc.
It tastes like normal onion except spicier.
These can be found at the markets, supermarkets and Greengroccers and prices vary within season. They are in season in Autumn, but you can also buy it during winter.