Prepare Carrots - peel carrots and julienne using a mandolin slicer or julienne peeler. You can manually slice them into thin pieces, but using a mandolin slicer will be quicker. The longer the carrot strand, the better.
Caramelize - heat the oil in a frying pan, add the onions and fry until caramelized. Remove from heat.
Mix Seasonings - add salt, sugar, black pepper, coriander, cayenne and garlic to the fried onions. Mix until combined.
Toss - pour hot oil onion mixture over the carrots. Add vinegar and toss together until combined.
Refrigerate and Serve - Place in fridge until fully cool. Serve as a cold side dish.
