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How to make french onion dip
Add the oil, salt and onions to a pot.
Alternately, you can use a pan or a skillet. Make sure those onions are as thinly diced as possible if you want the dip to have a creamy, even texture.
If you like the more lumpy consistency, though, then you can dice the onions a bit thicker. Cook on medium heat until the onions are caramelized (this should take about 20 minutes).