What is the second name of onion? - Quora
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Why do onions change color as they age? - Quora
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Are onions vegetables? - Quora
Is red onion healthier than other types of onions such as white or
Are red onions more common in burgers than yellow or white onions
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Why are 'red onions' called so when they're clearly purple in
Is red onion healthier than other types of onions such as white or
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Why is tomato red and onion pink in colour? - Quora
How does a red/purple onion differ from a yellow or white one? - Quora