Heat olive oil in a large skillet over high heat until the oil is shimmering. Add corn kernels to the skillet (fresh or frozen) and a pinch of salt. Cook corn for about 10 minutes, stirring about every 2 minutes, until it’s nicely charred.
Remove corn from the heat and add to a large bowl. Add all remaining ingredients to the bowl with the corn. Toss to combine, then give it a taste and adjust any seasoning as desired.
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Notes
Either serve this Mexican street corn salad immediately, or cover the bowl and store it in the fridge for up to 8 hours before serving!